53699783 has 4 divisors (see below), whose sum is σ = 53723400. Its totient is φ = 53676168.

The previous prime is 53699773. The next prime is 53699827. The reversal of 53699783 is 38799635.

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

It is a cyclic number.

It is not a de Polignac number, because 53699783 - 2¹² = 53695687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53699713) 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, 7985 + ... + 13082.

It is an arithmetic number, because the mean of its divisors is an integer number (13430850).

Almost surely, 2^53699783 is an apocalyptic number.

53699783 is a deficient number, since it is larger than the sum of its proper divisors (23617).

53699783 is a wasteful number, since it uses less digits than its factorization.

53699783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23616.

The product of its digits is 1224720, while the sum is 50.

The square root of 53699783 is about 7328.0135780442. The cubic root of 53699783 is about 377.2745504128.

The spelling of 53699783 in words is "fifty-three million, six hundred ninety-nine thousand, seven hundred eighty-three".