52145031 has 4 divisors (see below), whose sum is σ = 69526712. Its totient is φ = 34763352.

The previous prime is 52145029. The next prime is 52145039. The reversal of 52145031 is 13054125.

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

It is not a de Polignac number, because 52145031 - 2¹ = 52145029 is a prime.

It is a super-2 number, since 2×52145031² = 5438208515981922, 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 = 52144989 and 52145007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52145039) 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, 8690836 + ... + 8690841.

It is an arithmetic number, because the mean of its divisors is an integer number (17381678).

Almost surely, 2^52145031 is an apocalyptic number.

52145031 is a deficient number, since it is larger than the sum of its proper divisors (17381681).

52145031 is a wasteful number, since it uses less digits than its factorization.

52145031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17381680.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 52145031 is about 7221.1516394547. The cubic root of 52145031 is about 373.5977998723.

Adding to 52145031 its reverse (13054125), we get a palindrome (65199156).

The spelling of 52145031 in words is "fifty-two million, one hundred forty-five thousand, thirty-one".