52131145 has 16 divisors (see below), whose sum is σ = 68428800. Its totient is φ = 37811200.

The previous prime is 52131143. The next prime is 52131169. The reversal of 52131145 is 54113125.

It is a happy number.

It is not a de Polignac number, because 52131145 - 2¹ = 52131143 is a prime.

It is a super-2 number, since 2×52131145² = 5435312558022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52131143) 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, 23640 + ... + 25750.

It is an arithmetic number, because the mean of its divisors is an integer number (4276800).

Almost surely, 2^52131145 is an apocalyptic number.

52131145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52131145 is a deficient number, since it is larger than the sum of its proper divisors (16297655).

52131145 is a wasteful number, since it uses less digits than its factorization.

52131145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576.

The product of its digits is 600, while the sum is 22.

The square root of 52131145 is about 7220.1900944504. The cubic root of 52131145 is about 373.5646344264.

The spelling of 52131145 in words is "fifty-two million, one hundred thirty-one thousand, one hundred forty-five".