30490557 has 4 divisors (see below), whose sum is σ = 40654080. Its totient is φ = 20327036.

The previous prime is 30490549. The next prime is 30490589. The reversal of 30490557 is 75509403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30490557 - 2³ = 30490549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30490517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5081757 + ... + 5081762.

It is an arithmetic number, because the mean of its divisors is an integer number (10163520).

Almost surely, 2^30490557 is an apocalyptic number.

It is an amenable number.

30490557 is a deficient number, since it is larger than the sum of its proper divisors (10163523).

30490557 is a wasteful number, since it uses less digits than its factorization.

30490557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10163522.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 30490557 is about 5521.8255133606. The cubic root of 30490557 is about 312.4077406583.

The spelling of 30490557 in words is "thirty million, four hundred ninety thousand, five hundred fifty-seven".