55777492 has 6 divisors (see below), whose sum is σ = 97610618. Its totient is φ = 27888744.

The previous prime is 55777489. The next prime is 55777517. The reversal of 55777492 is 29477755.

It can be written as a sum of positive squares in only one way, i.e., 43639236 + 12138256 = 6606^2 + 3484^2 .

It is a super-2 number, since 2×55777492² = 6222257227620128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972183 + ... + 6972190.

Almost surely, 2^55777492 is an apocalyptic number.

It is an amenable number.

55777492 is a deficient number, since it is larger than the sum of its proper divisors (41833126).

55777492 is a wasteful number, since it uses less digits than its factorization.

55777492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13944377 (or 13944375 counting only the distinct ones).

The product of its digits is 617400, while the sum is 46.

The square root of 55777492 is about 7468.4330351152. The cubic root of 55777492 is about 382.0788466943.

The spelling of 55777492 in words is "fifty-five million, seven hundred seventy-seven thousand, four hundred ninety-two".