55143525021 has 8 divisors (see below), whose sum is σ = 79180446240. Its totient is φ = 33934476912.

The previous prime is 55143525013. The next prime is 55143525023. The reversal of 55143525021 is 12052534155.

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

It is not a de Polignac number, because 55143525021 - 2³ = 55143525013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55143525023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706968231 + ... + 706968308.

It is an arithmetic number, because the mean of its divisors is an integer number (9897555780).

Almost surely, 2^55143525021 is an apocalyptic number.

It is an amenable number.

55143525021 is a deficient number, since it is larger than the sum of its proper divisors (24036921219).

55143525021 is a wasteful number, since it uses less digits than its factorization.

55143525021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413936555.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 55143525021 in words is "fifty-five billion, one hundred forty-three million, five hundred twenty-five thousand, twenty-one".