75491157 has 16 divisors (see below), whose sum is σ = 115436160. Its totient is φ = 42987072.

The previous prime is 75491131. The next prime is 75491159. The reversal of 75491157 is 75119457.

It is not a de Polignac number, because 75491157 - 2⁶ = 75491093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75491159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19 + ... + 12287.

It is an arithmetic number, because the mean of its divisors is an integer number (7214760).

Almost surely, 2^75491157 is an apocalyptic number.

It is an amenable number.

75491157 is a deficient number, since it is larger than the sum of its proper divisors (39945003).

75491157 is a wasteful number, since it uses less digits than its factorization.

75491157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12572.

The product of its digits is 44100, while the sum is 39.

The square root of 75491157 is about 8688.5647261213. The cubic root of 75491157 is about 422.6349034098.

The spelling of 75491157 in words is "seventy-five million, four hundred ninety-one thousand, one hundred fifty-seven".