55273340 has 12 divisors (see below), whose sum is σ = 116074056. Its totient is φ = 22109328.

The previous prime is 55273319. The next prime is 55273367. The reversal of 55273340 is 4337255.

It is a super-2 number, since 2×55273340² = 6110284229511200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381814 + ... + 1381853.

It is an arithmetic number, because the mean of its divisors is an integer number (9672838).

Almost surely, 2^55273340 is an apocalyptic number.

It is an amenable number.

55273340 is an abundant number, since it is smaller than the sum of its proper divisors (60800716).

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

55273340 is a wasteful number, since it uses less digits than its factorization.

55273340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763676 (or 2763674 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 55273340 is about 7434.6042261845. The cubic root of 55273340 is about 380.9242046968.

The spelling of 55273340 in words is "fifty-five million, two hundred seventy-three thousand, three hundred forty".