53106691 has 16 divisors (see below), whose sum is σ = 64575360. Its totient is φ = 43044480.

The previous prime is 53106659. The next prime is 53106707. The reversal of 53106691 is 19660135.

It is a cyclic number.

It is not a de Polignac number, because 53106691 - 2⁵ = 53106659 is a prime.

It is a super-3 number, since 3×53106691³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53106601) 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, 3921 + ... + 11026.

It is an arithmetic number, because the mean of its divisors is an integer number (4035960).

Almost surely, 2^53106691 is an apocalyptic number.

53106691 is a deficient number, since it is larger than the sum of its proper divisors (11468669).

53106691 is a wasteful number, since it uses less digits than its factorization.

53106691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14994.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 53106691 is about 7287.4337732840. The cubic root of 53106691 is about 375.8804579803.

The spelling of 53106691 in words is "fifty-three million, one hundred six thousand, six hundred ninety-one".