55431404531526 has 32 divisors (see below), whose sum is σ = 110949710976000. Its totient is φ = 18462656852640.

The previous prime is 55431404531483. The next prime is 55431404531533. The reversal of 55431404531526 is 62513540413455.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38604960 + ... + 40015068.

It is an arithmetic number, because the mean of its divisors is an integer number (3467178468000).

Almost surely, 2^{55431404531526} is an apocalyptic number.

55431404531526 is an abundant number, since it is smaller than the sum of its proper divisors (55518306444474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55431404531526 is a wasteful number, since it uses less digits than its factorization.

55431404531526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415244.

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 55431404531526 in words is "fifty-five trillion, four hundred thirty-one billion, four hundred four million, five hundred thirty-one thousand, five hundred twenty-six".