75555157 has 8 divisors (see below), whose sum is σ = 81509976. Its totient is φ = 69768192.

The previous prime is 75555133. The next prime is 75555197. The reversal of 75555157 is 75155557.

It can be written as a sum of positive squares in 4 ways, for example, as 25796241 + 49758916 = 5079^2 + 7054^2 .

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 75555157 - 2¹⁵ = 75522389 is a prime.

It is a super-3 number, since 3×75555157³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75555107) 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, 41028 + ... + 42829.

It is an arithmetic number, because the mean of its divisors is an integer number (10188747).

Almost surely, 2^75555157 is an apocalyptic number.

It is an amenable number.

75555157 is a deficient number, since it is larger than the sum of its proper divisors (5954819).

75555157 is a wasteful number, since it uses less digits than its factorization.

75555157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83927.

The product of its digits is 153125, while the sum is 40.

The square root of 75555157 is about 8692.2469477115. The cubic root of 75555157 is about 422.7543036801.

The spelling of 75555157 in words is "seventy-five million, five hundred fifty-five thousand, one hundred fifty-seven".