55530431430 has 16 divisors (see below), whose sum is σ = 133273035504. Its totient is φ = 14808115040.

The previous prime is 55530431399. The next prime is 55530431459. The reversal of 55530431430 is 3413403555.

It is a junction number, because it is equal to n+sod(n) for n = 55530431391 and 55530431400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925507161 + ... + 925507220.

It is an arithmetic number, because the mean of its divisors is an integer number (8329564719).

Almost surely, 2^55530431430 is an apocalyptic number.

55530431430 is an abundant number, since it is smaller than the sum of its proper divisors (77742604074).

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

55530431430 is a wasteful number, since it uses less digits than its factorization.

55530431430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851014391.

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 55530431430 its reverse (3413403555), we get a palindrome (58943834985).

The spelling of 55530431430 in words is "fifty-five billion, five hundred thirty million, four hundred thirty-one thousand, four hundred thirty".