55052021451 has 16 divisors (see below), whose sum is σ = 88823430144. Its totient is φ = 29607809664.

The previous prime is 55052021369. The next prime is 55052021483. The reversal of 55052021451 is 15412025055.

It is not a de Polignac number, because 55052021451 - 2¹³ = 55052013259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55052021351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77103315 + ... + 77104028.

It is an arithmetic number, because the mean of its divisors is an integer number (5551464384).

Almost surely, 2^55052021451 is an apocalyptic number.

55052021451 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55052021451 is a deficient number, since it is larger than the sum of its proper divisors (33771408693).

55052021451 is a wasteful number, since it uses less digits than its factorization.

55052021451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154207370.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 55052021451 in words is "fifty-five billion, fifty-two million, twenty-one thousand, four hundred fifty-one".