55274535540 has 384 divisors, whose sum is σ = 199062097920. Its totient is φ = 12472828416.

The previous prime is 55274535499. The next prime is 55274535559. The reversal of 55274535540 is 4553547255.

It is a happy number.

55274535540 is a `hidden beast` number, since 5 + 5 + 2 + 74 + 5 + 35 + 540 = 666.

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 127 ways as a sum of consecutive naturals, for example, 174367462 + ... + 174367778.

It is an arithmetic number, because the mean of its divisors is an integer number (518390880).

Almost surely, 2^55274535540 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 55274535540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99531048960).

55274535540 is an abundant number, since it is smaller than the sum of its proper divisors (143787562380).

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

55274535540 is a wasteful number, since it uses less digits than its factorization.

55274535540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 2100000, while the sum is 45.

The spelling of 55274535540 in words is "fifty-five billion, two hundred seventy-four million, five hundred thirty-five thousand, five hundred forty".