55321450 has 12 divisors (see below), whose sum is σ = 102897990. Its totient is φ = 22128560.

The previous prime is 55321439. The next prime is 55321477. The reversal of 55321450 is 5412355.

It can be written as a sum of positive squares in 3 ways, for example, as 26409321 + 28912129 = 5139^2 + 5377^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553165 + ... + 553264.

Almost surely, 2^55321450 is an apocalyptic number.

55321450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55321450 is a deficient number, since it is larger than the sum of its proper divisors (47576540).

55321450 is a wasteful number, since it uses less digits than its factorization.

55321450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106441 (or 1106436 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55321450 is about 7437.8390679014. The cubic root of 55321450 is about 381.0346916512.

The spelling of 55321450 in words is "fifty-five million, three hundred twenty-one thousand, four hundred fifty".