400352553 has 12 divisors (see below), whose sum is σ = 608723440. Its totient is φ = 252854136.

The previous prime is 400352549. The next prime is 400352573. The reversal of 400352553 is 355253004.

400352553 is a `hidden beast` number, since 400 + 3 + 5 + 255 + 3 = 666.

It is not a de Polignac number, because 400352553 - 2² = 400352549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400352573) 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 11 ways as a sum of consecutive naturals, for example, 1170451 + ... + 1170792.

Almost surely, 2^400352553 is an apocalyptic number.

It is an amenable number.

400352553 is a deficient number, since it is larger than the sum of its proper divisors (208370887).

400352553 is a wasteful number, since it uses less digits than its factorization.

400352553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341268 (or 2341265 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 400352553 is about 20008.8118837676. The cubic root of 400352553 is about 737.0227055546.

The spelling of 400352553 in words is "four hundred million, three hundred fifty-two thousand, five hundred fifty-three".