53307811 has 4 divisors (see below), whose sum is σ = 53605800. Its totient is φ = 53009824.

The previous prime is 53307803. The next prime is 53307827. The reversal of 53307811 is 11870335.

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 53307811 - 2³ = 53307803 is a prime.

It is a super-2 number, since 2×53307811² = 5683445427223442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53307811.

It is not an unprimeable number, because it can be changed into a prime (53307871) 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, 148726 + ... + 149083.

It is an arithmetic number, because the mean of its divisors is an integer number (13401450).

Almost surely, 2^53307811 is an apocalyptic number.

53307811 is a deficient number, since it is larger than the sum of its proper divisors (297989).

53307811 is a wasteful number, since it uses less digits than its factorization.

53307811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297988.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 53307811 is about 7301.2198295901. The cubic root of 53307811 is about 376.3543583840.

The spelling of 53307811 in words is "fifty-three million, three hundred seven thousand, eight hundred eleven".