55142404251 has 32 divisors (see below), whose sum is σ = 84873277440. Its totient is φ = 31516346400.

The previous prime is 55142404241. The next prime is 55142404267. The reversal of 55142404251 is 15240424155.

It is a happy number.

It is not a de Polignac number, because 55142404251 - 2⁷ = 55142404123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (55142404201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457741 + ... + 565518.

It is an arithmetic number, because the mean of its divisors is an integer number (2652289920).

Almost surely, 2^55142404251 is an apocalyptic number.

55142404251 is a deficient number, since it is larger than the sum of its proper divisors (29730873189).

55142404251 is a wasteful number, since it uses less digits than its factorization.

55142404251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023367.

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 55142404251 in words is "fifty-five billion, one hundred forty-two million, four hundred four thousand, two hundred fifty-one".