52012381 has 2 divisors, whose sum is σ = 52012382. Its totient is φ = 52012380.

The previous prime is 52012349. The next prime is 52012397. The reversal of 52012381 is 18321025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32387481 + 19624900 = 5691^2 + 4430^2 .

It is a cyclic number.

It is not a de Polignac number, because 52012381 - 2⁵ = 52012349 is a prime.

It is a super-2 number, since 2×52012381² = 5410575554578322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52016381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26006190 + 26006191.

It is an arithmetic number, because the mean of its divisors is an integer number (26006191).

Almost surely, 2^52012381 is an apocalyptic number.

It is an amenable number.

52012381 is a deficient number, since it is larger than the sum of its proper divisors (1).

52012381 is an equidigital number, since it uses as much as digits as its factorization.

52012381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 52012381 is about 7211.9609677258. The cubic root of 52012381 is about 373.2807365493.

The spelling of 52012381 in words is "fifty-two million, twelve thousand, three hundred eighty-one".