55229769 has 56 divisors (see below), whose sum is σ = 96533760. Its totient is φ = 30932928.

The previous prime is 55229761. The next prime is 55229771. The reversal of 55229769 is 96792255.

55229769 is a `hidden beast` number, since 552 + 2 + 97 + 6 + 9 = 666.

It is not a de Polignac number, because 55229769 - 2³ = 55229761 is a prime.

It is a super-2 number, since 2×55229769² = 6100654767586722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55229761) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 403069 + ... + 403205.

Almost surely, 2^55229769 is an apocalyptic number.

It is an amenable number.

55229769 is a deficient number, since it is larger than the sum of its proper divisors (41303991).

55229769 is an equidigital number, since it uses as much as digits as its factorization.

55229769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 226 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 55229769 is about 7431.6733647275. The cubic root of 55229769 is about 380.8240864388.

The spelling of 55229769 in words is "fifty-five million, two hundred twenty-nine thousand, seven hundred sixty-nine".