53973535 has 16 divisors (see below), whose sum is σ = 80750592. Its totient is φ = 33645600.

The previous prime is 53973533. The next prime is 53973539. The reversal of 53973535 is 53537935.

It is not a de Polignac number, because 53973535 - 2¹ = 53973533 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 (53973533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69711 + ... + 70480.

It is an arithmetic number, because the mean of its divisors is an integer number (5046912).

Almost surely, 2^53973535 is an apocalyptic number.

53973535 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53973535 is a deficient number, since it is larger than the sum of its proper divisors (26777057).

53973535 is a wasteful number, since it uses less digits than its factorization.

53973535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140214.

The product of its digits is 212625, while the sum is 40.

The square root of 53973535 is about 7346.6682924983. The cubic root of 53973535 is about 377.9145570810.

Subtracting from 53973535 its reverse (53537935), we obtain a square (435600 = 660²).

The spelling of 53973535 in words is "fifty-three million, nine hundred seventy-three thousand, five hundred thirty-five".