53977668 has 24 divisors (see below), whose sum is σ = 126786240. Its totient is φ = 17872800.

The previous prime is 53977663. The next prime is 53977681. The reversal of 53977668 is 86677935.

It is a self number, because there is not a number n which added to its sum of digits gives 53977668.

It is not an unprimeable number, because it can be changed into a prime (53977663) 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, 13083 + ... + 16706.

It is an arithmetic number, because the mean of its divisors is an integer number (5282760).

Almost surely, 2^53977668 is an apocalyptic number.

It is an amenable number.

53977668 is an abundant number, since it is smaller than the sum of its proper divisors (72808572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53977668 is a wasteful number, since it uses less digits than its factorization.

53977668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29947 (or 29945 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 53977668 is about 7346.9495710805. The cubic root of 53977668 is about 377.9242030491.

It can be divided in two parts, 53977 and 668, that added together give a palindrome (54645).

The spelling of 53977668 in words is "fifty-three million, nine hundred seventy-seven thousand, six hundred sixty-eight".