55872563 has 2 divisors, whose sum is σ = 55872564. Its totient is φ = 55872562.

The previous prime is 55872517. The next prime is 55872577. The reversal of 55872563 is 36527855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55872563 - 2⁶ = 55872499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55872563.

It is not a weakly prime, because it can be changed into another prime (55872163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27936281 + 27936282.

It is an arithmetic number, because the mean of its divisors is an integer number (27936282).

Almost surely, 2^55872563 is an apocalyptic number.

55872563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55872563 is an equidigital number, since it uses as much as digits as its factorization.

55872563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 41.

The square root of 55872563 is about 7474.7951811404. The cubic root of 55872563 is about 382.2958039782.

The spelling of 55872563 in words is "fifty-five million, eight hundred seventy-two thousand, five hundred sixty-three".