73152557 has 4 divisors (see below), whose sum is σ = 73862880. Its totient is φ = 72442236.

The previous prime is 73152551. The next prime is 73152577. The reversal of 73152557 is 75525137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73152557 - 2¹⁸ = 72890413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73152551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355007 + ... + 355212.

It is an arithmetic number, because the mean of its divisors is an integer number (18465720).

Almost surely, 2^73152557 is an apocalyptic number.

It is an amenable number.

73152557 is a deficient number, since it is larger than the sum of its proper divisors (710323).

73152557 is a wasteful number, since it uses less digits than its factorization.

73152557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710322.

The product of its digits is 36750, while the sum is 35.

The square root of 73152557 is about 8552.9268089935. The cubic root of 73152557 is about 418.2248528877.

The spelling of 73152557 in words is "seventy-three million, one hundred fifty-two thousand, five hundred fifty-seven".