55551902040 has 384 divisors, whose sum is σ = 192320593920. Its totient is φ = 13883443200.

The previous prime is 55551902033. The next prime is 55551902101. The reversal of 55551902040 is 4020915555.

55551902040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 55551901986 and 55551902004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 76412157 + ... + 76412883.

It is an arithmetic number, because the mean of its divisors is an integer number (500834880).

Almost surely, 2^55551902040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55551902040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96160296960).

55551902040 is an abundant number, since it is smaller than the sum of its proper divisors (136768691880).

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

55551902040 is a wasteful number, since it uses less digits than its factorization.

55551902040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 55551902040 in words is "fifty-five billion, five hundred fifty-one million, nine hundred two thousand, forty".