72750057 has 16 divisors (see below), whose sum is σ = 98045760. Its totient is φ = 47980800.

The previous prime is 72750001. The next prime is 72750061. The reversal of 72750057 is 75005727.

It is not a de Polignac number, because 72750057 - 2¹¹ = 72748009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72754057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177669 + ... + 178077.

It is an arithmetic number, because the mean of its divisors is an integer number (6127860).

Almost surely, 2^72750057 is an apocalyptic number.

It is an amenable number.

72750057 is a deficient number, since it is larger than the sum of its proper divisors (25295703).

72750057 is a wasteful number, since it uses less digits than its factorization.

72750057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 17150, while the sum is 33.

The square root of 72750057 is about 8529.3643960145. The cubic root of 72750057 is about 417.4563894830.

The spelling of 72750057 in words is "seventy-two million, seven hundred fifty thousand, fifty-seven".