55822261 has 12 divisors (see below), whose sum is σ = 61818400. Its totient is φ = 50367240.

The previous prime is 55822243. The next prime is 55822267. The reversal of 55822261 is 16222855.

It is not a de Polignac number, because 55822261 - 2⁹ = 55821749 is a prime.

It is a super-2 number, since 2×55822261² = 6232249646304242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55822267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15160 + ... + 18478.

Almost surely, 2^55822261 is an apocalyptic number.

It is an amenable number.

55822261 is a deficient number, since it is larger than the sum of its proper divisors (5996139).

55822261 is a wasteful number, since it uses less digits than its factorization.

55822261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3469 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 55822261 is about 7471.4296490029. The cubic root of 55822261 is about 382.1810427168.

The spelling of 55822261 in words is "fifty-five million, eight hundred twenty-two thousand, two hundred sixty-one".