55151050231 has 4 divisors (see below), whose sum is σ = 55210417200. Its totient is φ = 55091683264.

The previous prime is 55151050211. The next prime is 55151050291. The reversal of 55151050231 is 13205015155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55151050231 - 2¹⁵ = 55151017463 is a prime.

It is a super-2 number, since 2×55151050231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55151050231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55151050211) 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, 29682091 + ... + 29683948.

It is an arithmetic number, because the mean of its divisors is an integer number (13802604300).

Almost surely, 2^55151050231 is an apocalyptic number.

55151050231 is a deficient number, since it is larger than the sum of its proper divisors (59366969).

55151050231 is an equidigital number, since it uses as much as digits as its factorization.

55151050231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59366968.

The product of its (nonzero) digits is 3750, while the sum is 28.

Adding to 55151050231 its reverse (13205015155), we get a palindrome (68356065386).

The spelling of 55151050231 in words is "fifty-five billion, one hundred fifty-one million, fifty thousand, two hundred thirty-one".