53867977 has 4 divisors (see below), whose sum is σ = 53916820. Its totient is φ = 53819136.

The previous prime is 53867959. The next prime is 53868007. The reversal of 53867977 is 77976835.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4923961 + 48944016 = 2219^2 + 6996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53867977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53867477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22728 + ... + 24985.

It is an arithmetic number, because the mean of its divisors is an integer number (13479205).

Almost surely, 2^53867977 is an apocalyptic number.

It is an amenable number.

53867977 is a deficient number, since it is larger than the sum of its proper divisors (48843).

53867977 is a wasteful number, since it uses less digits than its factorization.

53867977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48842.

The product of its digits is 2222640, while the sum is 52.

The square root of 53867977 is about 7339.4807037010. The cubic root of 53867977 is about 377.6680292278.

It can be divided in two parts, 538679 and 77, that added together give a square (538756 = 734²).

The spelling of 53867977 in words is "fifty-three million, eight hundred sixty-seven thousand, nine hundred seventy-seven".