53876729 has 4 divisors (see below), whose sum is σ = 55614720. Its totient is φ = 52138740.

The previous prime is 53876677. The next prime is 53876731. The reversal of 53876729 is 92767835.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92767835 = 5 ⋅18553567.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53876729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53876749) 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, 868949 + ... + 869010.

It is an arithmetic number, because the mean of its divisors is an integer number (13903680).

Almost surely, 2^53876729 is an apocalyptic number.

It is an amenable number.

53876729 is a deficient number, since it is larger than the sum of its proper divisors (1737991).

53876729 is a wasteful number, since it uses less digits than its factorization.

53876729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737990.

The product of its digits is 635040, while the sum is 47.

The square root of 53876729 is about 7340.0769069540. The cubic root of 53876729 is about 377.6884815249.

The spelling of 53876729 in words is "fifty-three million, eight hundred seventy-six thousand, seven hundred twenty-nine".