30868553 has 4 divisors (see below), whose sum is σ = 32210688. Its totient is φ = 29526420.

The previous prime is 30868547. The next prime is 30868571. The reversal of 30868553 is 35586803.

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 30868553 - 2⁶ = 30868489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30868153) 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 3 ways as a sum of consecutive naturals, for example, 671033 + ... + 671078.

It is an arithmetic number, because the mean of its divisors is an integer number (8052672).

Almost surely, 2^30868553 is an apocalyptic number.

It is an amenable number.

30868553 is a deficient number, since it is larger than the sum of its proper divisors (1342135).

30868553 is a wasteful number, since it uses less digits than its factorization.

30868553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342134.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 30868553 is about 5555.9475339495. The cubic root of 30868553 is about 313.6934307518.

The spelling of 30868553 in words is "thirty million, eight hundred sixty-eight thousand, five hundred fifty-three".