53013971 has 4 divisors (see below), whose sum is σ = 55804200. Its totient is φ = 50223744.

The previous prime is 53013967. The next prime is 53014019. The reversal of 53013971 is 17931035.

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 53013971 - 2² = 53013967 is a prime.

It is a super-2 number, since 2×53013971² = 5620962242377682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53013901) 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, 1395086 + ... + 1395123.

It is an arithmetic number, because the mean of its divisors is an integer number (13951050).

Almost surely, 2^53013971 is an apocalyptic number.

53013971 is a deficient number, since it is larger than the sum of its proper divisors (2790229).

53013971 is a wasteful number, since it uses less digits than its factorization.

53013971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790228.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 53013971 is about 7281.0693582742. The cubic root of 53013971 is about 375.6615782257.

The spelling of 53013971 in words is "fifty-three million, thirteen thousand, nine hundred seventy-one".