55512300402 has 40 divisors (see below), whose sum is σ = 133957037676. Its totient is φ = 17080707168.

The previous prime is 55512300397. The next prime is 55512300449. The reversal of 55512300402 is 20400321555.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40747863321 + 14764437081 = 201861^2 + 121509^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13177453 + ... + 13181664.

Almost surely, 2^55512300402 is an apocalyptic number.

55512300402 is an abundant number, since it is smaller than the sum of its proper divisors (78444737274).

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

55512300402 is a wasteful number, since it uses less digits than its factorization.

55512300402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26359144 (or 26359135 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 55512300402 its reverse (20400321555), we get a palindrome (75912621957).

The spelling of 55512300402 in words is "fifty-five billion, five hundred twelve million, three hundred thousand, four hundred two".