75505157 has 8 divisors (see below), whose sum is σ = 92929536. Its totient is φ = 59740272.

The previous prime is 75505153. The next prime is 75505201. The reversal of 75505157 is 75150557.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75505157 - 2² = 75505153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75505151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414773 + ... + 414954.

It is an arithmetic number, because the mean of its divisors is an integer number (11616192).

Almost surely, 2^75505157 is an apocalyptic number.

It is an amenable number.

75505157 is a deficient number, since it is larger than the sum of its proper divisors (17424379).

75505157 is a wasteful number, since it uses less digits than its factorization.

75505157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829747.

The product of its (nonzero) digits is 30625, while the sum is 35.

The square root of 75505157 is about 8689.3703454278. The cubic root of 75505157 is about 422.6610279837.

The spelling of 75505157 in words is "seventy-five million, five hundred five thousand, one hundred fifty-seven".