55394730 has 24 divisors (see below), whose sum is σ = 144026532. Its totient is φ = 14771904.

The previous prime is 55394723. The next prime is 55394753. The reversal of 55394730 is 3749355.

It can be written as a sum of positive squares in 2 ways, for example, as 51022449 + 4372281 = 7143^2 + 2091^2 .

It is a super-2 number, since 2×55394730² = 6137152223545800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307659 + ... + 307838.

Almost surely, 2^55394730 is an apocalyptic number.

55394730 is an abundant number, since it is smaller than the sum of its proper divisors (88631802).

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

55394730 is a wasteful number, since it uses less digits than its factorization.

55394730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615510 (or 615507 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 55394730 is about 7442.7635996315. The cubic root of 55394730 is about 381.2028597094.

The spelling of 55394730 in words is "fifty-five million, three hundred ninety-four thousand, seven hundred thirty".