75551157 has 32 divisors (see below), whose sum is σ = 123125760. Its totient is φ = 45405360.

The previous prime is 75551153. The next prime is 75551167. The reversal of 75551157 is 75115557.

It is not a de Polignac number, because 75551157 - 2² = 75551153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75551153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36718 + ... + 38720.

It is an arithmetic number, because the mean of its divisors is an integer number (3847680).

Almost surely, 2^75551157 is an apocalyptic number.

It is an amenable number.

75551157 is a deficient number, since it is larger than the sum of its proper divisors (47574603).

75551157 is a wasteful number, since it uses less digits than its factorization.

75551157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2144 counting only the distinct ones).

The product of its digits is 30625, while the sum is 36.

The square root of 75551157 is about 8692.0168545626. The cubic root of 75551157 is about 422.7468431390.

Subtracting from 75551157 its reverse (75115557), we obtain a square (435600 = 660²).

The spelling of 75551157 in words is "seventy-five million, five hundred fifty-one thousand, one hundred fifty-seven".