45053440 has 40 divisors (see below), whose sum is σ = 108028800. Its totient is φ = 18020352.

The previous prime is 45053431. The next prime is 45053467. The reversal of 45053440 is 4435054.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6240 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (2700720).

Almost surely, 2^45053440 is an apocalyptic number.

45053440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45053440 is an abundant number, since it is smaller than the sum of its proper divisors (62975360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45053440 is an equidigital number, since it uses as much as digits as its factorization.

45053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17622 (or 17606 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 45053440 is about 6712.1859330623. The cubic root of 45053440 is about 355.8300750298.

Adding to 45053440 its reverse (4435054), we get a palindrome (49488494).

The spelling of 45053440 in words is "forty-five million, fifty-three thousand, four hundred forty".