55431309510 has 48 divisors (see below), whose sum is σ = 144364581504. Its totient is φ = 14756741376.

The previous prime is 55431309491. The next prime is 55431309523. The reversal of 55431309510 is 1590313455.

It is a happy number.

55431309510 is a `hidden beast` number, since 5 + 5 + 4 + 3 + 130 + 9 + 510 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465942 + ... + 572681.

It is an arithmetic number, because the mean of its divisors is an integer number (3007595448).

Almost surely, 2^55431309510 is an apocalyptic number.

55431309510 is an abundant number, since it is smaller than the sum of its proper divisors (88933271994).

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

55431309510 is a wasteful number, since it uses less digits than its factorization.

55431309510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039229 (or 1039226 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 55431309510 in words is "fifty-five billion, four hundred thirty-one million, three hundred nine thousand, five hundred ten".