55123431002 has 8 divisors (see below), whose sum is σ = 82688606676. Its totient is φ = 27560562112.

The previous prime is 55123431001. The next prime is 55123431031. The reversal of 55123431002 is 20013432155.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54896958601 + 226472401 = 234301^2 + 15049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (55123431001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515663 + ... + 613314.

Almost surely, 2^55123431002 is an apocalyptic number.

55123431002 is a deficient number, since it is larger than the sum of its proper divisors (27565175674).

55123431002 is a wasteful number, since it uses less digits than its factorization.

55123431002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153392.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 55123431002 its reverse (20013432155), we get a palindrome (75136863157).

The spelling of 55123431002 in words is "fifty-five billion, one hundred twenty-three million, four hundred thirty-one thousand, two".