55661146 has 12 divisors (see below), whose sum is σ = 88118442. Its totient is φ = 26365464.

The previous prime is 55661129. The next prime is 55661147. The reversal of 55661146 is 64116655.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 52403121 + 3258025 = 7239^2 + 1805^2 .

It is not an unprimeable number, because it can be changed into a prime (55661147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37825 + ... + 39268.

Almost surely, 2^55661146 is an apocalyptic number.

55661146 is a deficient number, since it is larger than the sum of its proper divisors (32457296).

55661146 is a wasteful number, since it uses less digits than its factorization.

55661146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77133 (or 77114 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 55661146 is about 7460.6397848978. The cubic root of 55661146 is about 381.8130029635.

The spelling of 55661146 in words is "fifty-five million, six hundred sixty-one thousand, one hundred forty-six".