53511977 has 4 divisors (see below), whose sum is σ = 53832576. Its totient is φ = 53191380.

The previous prime is 53511967. The next prime is 53511979. The reversal of 53511977 is 77911535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53511977 - 2¹⁴ = 53495593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53511977.

It is not an unprimeable number, because it can be changed into a prime (53511979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160049 + ... + 160382.

It is an arithmetic number, because the mean of its divisors is an integer number (13458144).

Almost surely, 2^53511977 is an apocalyptic number.

It is an amenable number.

53511977 is a deficient number, since it is larger than the sum of its proper divisors (320599).

53511977 is a wasteful number, since it uses less digits than its factorization.

53511977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320598.

The product of its digits is 33075, while the sum is 38.

The square root of 53511977 is about 7315.1881042117. The cubic root of 53511977 is about 376.8342184933.

The spelling of 53511977 in words is "fifty-three million, five hundred eleven thousand, nine hundred seventy-seven".