55727190 has 192 divisors, whose sum is σ = 169827840. Its totient is φ = 13063680.

The previous prime is 55727167. The next prime is 55727197. The reversal of 55727190 is 9172755.

It is a super-2 number, since 2×55727190² = 6211039410592200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55727197) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 784855 + ... + 784925.

It is an arithmetic number, because the mean of its divisors is an integer number (884520).

Almost surely, 2^55727190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55727190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84913920).

55727190 is an abundant number, since it is smaller than the sum of its proper divisors (114100650).

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

55727190 is a wasteful number, since it uses less digits than its factorization.

55727190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 55727190 is about 7465.0646346833. The cubic root of 55727190 is about 381.9639550065.

The spelling of 55727190 in words is "fifty-five million, seven hundred twenty-seven thousand, one hundred ninety".