55913786 has 4 divisors (see below), whose sum is σ = 83870682. Its totient is φ = 27956892.

The previous prime is 55913779. The next prime is 55913821. The reversal of 55913786 is 68731955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68731955 = 5 ⋅13746391.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 7123561 = 6985^2 + 2669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13978445 + ... + 13978448.

Almost surely, 2^55913786 is an apocalyptic number.

55913786 is a deficient number, since it is larger than the sum of its proper divisors (27956896).

55913786 is a wasteful number, since it uses less digits than its factorization.

55913786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27956895.

The product of its digits is 226800, while the sum is 44.

The square root of 55913786 is about 7477.5521395708. The cubic root of 55913786 is about 382.3898006549.

The spelling of 55913786 in words is "fifty-five million, nine hundred thirteen thousand, seven hundred eighty-six".