30499557 has 16 divisors (see below), whose sum is σ = 44456448. Its totient is φ = 18445680.

The previous prime is 30499549. The next prime is 30499559. The reversal of 30499557 is 75599403.

It is not a de Polignac number, because 30499557 - 2³ = 30499549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30499559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26598 + ... + 27720.

It is an arithmetic number, because the mean of its divisors is an integer number (2778528).

Almost surely, 2^30499557 is an apocalyptic number.

It is an amenable number.

30499557 is a deficient number, since it is larger than the sum of its proper divisors (13956891).

30499557 is a wasteful number, since it uses less digits than its factorization.

30499557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 30499557 is about 5522.6404011125. The cubic root of 30499557 is about 312.4384757814.

The spelling of 30499557 in words is "thirty million, four hundred ninety-nine thousand, five hundred fifty-seven".