55551052620 has 72 divisors (see below), whose sum is σ = 192576986784. Its totient is φ = 12697383168.

The previous prime is 55551052619. The next prime is 55551052621. The reversal of 55551052620 is 2625015555.

55551052620 is a `hidden beast` number, since 55 + 55 + 10 + 526 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (55551052619) and next prime (55551052621).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55551052621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22042809 + ... + 22045328.

It is an arithmetic number, because the mean of its divisors is an integer number (2674680372).

Almost surely, 2^55551052620 is an apocalyptic number.

It is an amenable number.

55551052620 is an abundant number, since it is smaller than the sum of its proper divisors (137025934164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55551052620 is a wasteful number, since it uses less digits than its factorization.

55551052620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44088159 (or 44088154 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 55551052620 in words is "fifty-five billion, five hundred fifty-one million, fifty-two thousand, six hundred twenty".