53752981 has 2 divisors, whose sum is σ = 53752982. Its totient is φ = 53752980.

The previous prime is 53752973. The next prime is 53753057. The reversal of 53752981 is 18925735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 17089956 = 6055^2 + 4134^2 .

It is a cyclic number.

It is not a de Polignac number, because 53752981 - 2³ = 53752973 is a prime.

It is a super-2 number, since 2×53752981² = 5778765932772722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53752931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26876490 + 26876491.

It is an arithmetic number, because the mean of its divisors is an integer number (26876491).

Almost surely, 2^53752981 is an apocalyptic number.

It is an amenable number.

53752981 is a deficient number, since it is larger than the sum of its proper divisors (1).

53752981 is an equidigital number, since it uses as much as digits as its factorization.

53752981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 53752981 is about 7331.6424490015. The cubic root of 53752981 is about 377.3990923662.

The spelling of 53752981 in words is "fifty-three million, seven hundred fifty-two thousand, nine hundred eighty-one".