55712550 has 24 divisors (see below), whose sum is σ = 138167496. Its totient is φ = 14856640.

The previous prime is 55712543. The next prime is 55712551. The reversal of 55712550 is 5521755.

It is a super-4 number, since 4×55712550⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55712551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185559 + ... + 185858.

It is an arithmetic number, because the mean of its divisors is an integer number (5756979).

Almost surely, 2^55712550 is an apocalyptic number.

55712550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55712550 is an abundant number, since it is smaller than the sum of its proper divisors (82454946).

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

55712550 is a wasteful number, since it uses less digits than its factorization.

55712550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371432 (or 371427 counting only the distinct ones).

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 55712550 is about 7464.0840027427. The cubic root of 55712550 is about 381.9305036993.

The spelling of 55712550 in words is "fifty-five million, seven hundred twelve thousand, five hundred fifty".