55723535 has 36 divisors (see below), whose sum is σ = 82735272. Its totient is φ = 35917056.

The previous prime is 55723531. The next prime is 55723537. The reversal of 55723535 is 53532755.

It is not a de Polignac number, because 55723535 - 2² = 55723531 is a prime.

It is a super-2 number, since 2×55723535² = 6210224705792450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55723495 and 55723504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55723531) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70412 + ... + 71198.

It is an arithmetic number, because the mean of its divisors is an integer number (2298202).

Almost surely, 2^55723535 is an apocalyptic number.

55723535 is a deficient number, since it is larger than the sum of its proper divisors (27011737).

55723535 is a wasteful number, since it uses less digits than its factorization.

55723535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 816 counting only the distinct ones).

The product of its digits is 78750, while the sum is 35.

The square root of 55723535 is about 7464.8198236796. The cubic root of 55723535 is about 381.9556041531.

The spelling of 55723535 in words is "fifty-five million, seven hundred twenty-three thousand, five hundred thirty-five".