55123892 has 6 divisors (see below), whose sum is σ = 96466818. Its totient is φ = 27561944.

The previous prime is 55123879. The next prime is 55123907. The reversal of 55123892 is 29832155.

It can be written as a sum of positive squares in only one way, i.e., 53787556 + 1336336 = 7334^2 + 1156^2 .

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, 6890483 + ... + 6890490.

It is an arithmetic number, because the mean of its divisors is an integer number (16077803).

Almost surely, 2^55123892 is an apocalyptic number.

It is an amenable number.

55123892 is a deficient number, since it is larger than the sum of its proper divisors (41342926).

55123892 is a wasteful number, since it uses less digits than its factorization.

55123892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13780977 (or 13780975 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 55123892 is about 7424.5465854825. The cubic root of 55123892 is about 380.5805806557.

The spelling of 55123892 in words is "fifty-five million, one hundred twenty-three thousand, eight hundred ninety-two".