55912501 has 2 divisors, whose sum is σ = 55912502. Its totient is φ = 55912500.

The previous prime is 55912481. The next prime is 55912543. The reversal of 55912501 is 10521955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29441476 + 26471025 = 5426^2 + 5145^2 .

It is a cyclic number.

It is not a de Polignac number, because 55912501 - 2¹³ = 55904309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55912501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55912301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27956250 + 27956251.

It is an arithmetic number, because the mean of its divisors is an integer number (27956251).

Almost surely, 2^55912501 is an apocalyptic number.

It is an amenable number.

55912501 is a deficient number, since it is larger than the sum of its proper divisors (1).

55912501 is an equidigital number, since it uses as much as digits as its factorization.

55912501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 55912501 is about 7477.4662152363. The cubic root of 55912501 is about 382.3868712959.

The spelling of 55912501 in words is "fifty-five million, nine hundred twelve thousand, five hundred one".