400552534 has 16 divisors (see below), whose sum is σ = 625922640. Its totient is φ = 192077440.

The previous prime is 400552531. The next prime is 400552561. The reversal of 400552534 is 435255004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400552531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36559 + ... + 46234.

It is an arithmetic number, because the mean of its divisors is an integer number (39120165).

Almost surely, 2^400552534 is an apocalyptic number.

400552534 is a deficient number, since it is larger than the sum of its proper divisors (225370106).

400552534 is a wasteful number, since it uses less digits than its factorization.

400552534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82895.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 400552534 is about 20013.8085830758. The cubic root of 400552534 is about 737.1454024145.

The spelling of 400552534 in words is "four hundred million, five hundred fifty-two thousand, five hundred thirty-four".