55240536 has 64 divisors (see below), whose sum is σ = 150282720. Its totient is φ = 16819200.

The previous prime is 55240529. The next prime is 55240547. The reversal of 55240536 is 63504255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30636 + ... + 32388.

Almost surely, 2^55240536 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 55240536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75141360).

55240536 is an abundant number, since it is smaller than the sum of its proper divisors (95042184).

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

55240536 is a wasteful number, since it uses less digits than its factorization.

55240536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 55240536 is about 7432.3977288625. The cubic root of 55240536 is about 380.8488319495.

The spelling of 55240536 in words is "fifty-five million, two hundred forty thousand, five hundred thirty-six".