55577211 has 16 divisors (see below), whose sum is σ = 75586560. Its totient is φ = 36316800.

The previous prime is 55577209. The next prime is 55577213. The reversal of 55577211 is 11277555.

It is an interprime number because it is at equal distance from previous prime (55577209) and next prime (55577213).

It is not a de Polignac number, because 55577211 - 2¹ = 55577209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55577213) 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, 35011 + ... + 36563.

It is an arithmetic number, because the mean of its divisors is an integer number (4724160).

Almost surely, 2^55577211 is an apocalyptic number.

55577211 is a deficient number, since it is larger than the sum of its proper divisors (20009349).

55577211 is a wasteful number, since it uses less digits than its factorization.

55577211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786.

The product of its digits is 12250, while the sum is 33.

The square root of 55577211 is about 7455.0124748387. The cubic root of 55577211 is about 381.6209863353.

The spelling of 55577211 in words is "fifty-five million, five hundred seventy-seven thousand, two hundred eleven".