30775157 has 16 divisors (see below), whose sum is σ = 37297152. Its totient is φ = 24831360.

The previous prime is 30775153. The next prime is 30775181. The reversal of 30775157 is 75157703.

It is a cyclic number.

It is not a de Polignac number, because 30775157 - 2² = 30775153 is a prime.

It is a super-2 number, since 2×30775157² = 1894220576749298, which contains 22 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 (30775153) 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, 6113 + ... + 9945.

It is an arithmetic number, because the mean of its divisors is an integer number (2331072).

Almost surely, 2^30775157 is an apocalyptic number.

30775157 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30775157 is a deficient number, since it is larger than the sum of its proper divisors (6521995).

30775157 is a wasteful number, since it uses less digits than its factorization.

30775157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908.

The product of its (nonzero) digits is 25725, while the sum is 35.

The square root of 30775157 is about 5547.5361197562. The cubic root of 30775157 is about 313.3767405031.

The spelling of 30775157 in words is "thirty million, seven hundred seventy-five thousand, one hundred fifty-seven".