53145131 has 4 divisors (see below), whose sum is σ = 57233232. Its totient is φ = 49057032.

The previous prime is 53145107. The next prime is 53145181. The reversal of 53145131 is 13154135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53145131 is a prime.

It is a super-2 number, since 2×53145131² = 5648809898014322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53145097 and 53145106.

It is not an unprimeable number, because it can be changed into a prime (53145101) 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, 2044031 + ... + 2044056.

It is an arithmetic number, because the mean of its divisors is an integer number (14308308).

Almost surely, 2^53145131 is an apocalyptic number.

53145131 is a deficient number, since it is larger than the sum of its proper divisors (4088101).

53145131 is a wasteful number, since it uses less digits than its factorization.

53145131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088100.

The product of its digits is 900, while the sum is 23.

The square root of 53145131 is about 7290.0707129629. The cubic root of 53145131 is about 375.9711267817.

Adding to 53145131 its reverse (13154135), we get a palindrome (66299266).

The spelling of 53145131 in words is "fifty-three million, one hundred forty-five thousand, one hundred thirty-one".