53697616 has 40 divisors (see below), whose sum is σ = 120260160. Its totient is φ = 22750464.

The previous prime is 53697607. The next prime is 53697649. The reversal of 53697616 is 61679635.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7275 + ... + 12661.

It is an arithmetic number, because the mean of its divisors is an integer number (3006504).

Almost surely, 2^53697616 is an apocalyptic number.

53697616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53697616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60130080).

53697616 is an abundant number, since it is smaller than the sum of its proper divisors (66562544).

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

53697616 is a wasteful number, since it uses less digits than its factorization.

53697616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491 (or 5485 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The square root of 53697616 is about 7327.8657192937. The cubic root of 53697616 is about 377.2694755013.

The spelling of 53697616 in words is "fifty-three million, six hundred ninety-seven thousand, six hundred sixteen".