55697782 has 16 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 23790888.

The previous prime is 55697767. The next prime is 55697783. The reversal of 55697782 is 28779655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55697783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2182 + ... + 10777.

It is an arithmetic number, because the mean of its divisors is an integer number (5987520).

Almost surely, 2^55697782 is an apocalyptic number.

55697782 is a deficient number, since it is larger than the sum of its proper divisors (40102538).

55697782 is a wasteful number, since it uses less digits than its factorization.

55697782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275.

The product of its digits is 1058400, while the sum is 49.

The square root of 55697782 is about 7463.0946664236. The cubic root of 55697782 is about 381.8967539839.

The spelling of 55697782 in words is "fifty-five million, six hundred ninety-seven thousand, seven hundred eighty-two".