34400557 has 4 divisors (see below), whose sum is σ = 34445056. Its totient is φ = 34356060.

The previous prime is 34400549. The next prime is 34400573. The reversal of 34400557 is 75500443.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75500443 = 1009 ⋅74827.

It is a cyclic number.

It is not a de Polignac number, because 34400557 - 2³ = 34400549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34400057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21069 + ... + 22642.

It is an arithmetic number, because the mean of its divisors is an integer number (8611264).

Almost surely, 2^34400557 is an apocalyptic number.

It is an amenable number.

34400557 is a deficient number, since it is larger than the sum of its proper divisors (44499).

34400557 is an equidigital number, since it uses as much as digits as its factorization.

34400557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44498.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 34400557 is about 5865.1988031097. The cubic root of 34400557 is about 325.2284216680.

The spelling of 34400557 in words is "thirty-four million, four hundred thousand, five hundred fifty-seven".