55770552540 has 240 divisors, whose sum is σ = 177974241984. Its totient is φ = 14616806400.

The previous prime is 55770552479. The next prime is 55770552571. The reversal of 55770552540 is 4525507755.

55770552540 is a `hidden beast` number, since 5 + 57 + 7 + 0 + 5 + 52 + 540 = 666.

It is a super-2 number, since 2×55770552540² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 52563610 + ... + 52564670.

Almost surely, 2^55770552540 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 55770552540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88987120992).

55770552540 is an abundant number, since it is smaller than the sum of its proper divisors (122203689444).

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

55770552540 is a wasteful number, since it uses less digits than its factorization.

55770552540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 1225000, while the sum is 45.

The spelling of 55770552540 in words is "fifty-five billion, seven hundred seventy million, five hundred fifty-two thousand, five hundred forty".