53613977 has 4 divisors (see below), whose sum is σ = 54023376. Its totient is φ = 53204580.

The previous prime is 53613947. The next prime is 53614007. The reversal of 53613977 is 77931635.

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 an interprime number because it is at equal distance from previous prime (53613947) and next prime (53614007).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53613977 is a prime.

It is a super-3 number, since 3×53613977³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53613907) 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, 204503 + ... + 204764.

It is an arithmetic number, because the mean of its divisors is an integer number (13505844).

Almost surely, 2^53613977 is an apocalyptic number.

It is an amenable number.

53613977 is a deficient number, since it is larger than the sum of its proper divisors (409399).

53613977 is a wasteful number, since it uses less digits than its factorization.

53613977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409398.

The product of its digits is 119070, while the sum is 41.

The square root of 53613977 is about 7322.1565812266. The cubic root of 53613977 is about 377.0734963549.

The spelling of 53613977 in words is "fifty-three million, six hundred thirteen thousand, nine hundred seventy-seven".