55785126 has 32 divisors (see below), whose sum is σ = 119812608. Its totient is φ = 17252480.

The previous prime is 55785113. The next prime is 55785127. The reversal of 55785126 is 62158755.

It is a super-2 number, since 2×55785126² = 6223960565671752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55785127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3391 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (3744144).

Almost surely, 2^55785126 is an apocalyptic number.

55785126 is an abundant number, since it is smaller than the sum of its proper divisors (64027482).

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

55785126 is a wasteful number, since it uses less digits than its factorization.

55785126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796.

The product of its digits is 84000, while the sum is 39.

The square root of 55785126 is about 7468.9441020803. The cubic root of 55785126 is about 382.0962770039.

The spelling of 55785126 in words is "fifty-five million, seven hundred eighty-five thousand, one hundred twenty-six".