53388761 has 2 divisors, whose sum is σ = 53388762. Its totient is φ = 53388760.

The previous prime is 53388707. The next prime is 53388787. The reversal of 53388761 is 16788335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27825625 + 25563136 = 5275^2 + 5056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53388761 is a prime.

It is a super-2 number, since 2×53388761² = 5700719602230242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53388661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26694380 + 26694381.

It is an arithmetic number, because the mean of its divisors is an integer number (26694381).

Almost surely, 2^53388761 is an apocalyptic number.

It is an amenable number.

53388761 is a deficient number, since it is larger than the sum of its proper divisors (1).

53388761 is an equidigital number, since it uses as much as digits as its factorization.

53388761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 53388761 is about 7306.7613208589. The cubic root of 53388761 is about 376.5447649837.

The spelling of 53388761 in words is "fifty-three million, three hundred eighty-eight thousand, seven hundred sixty-one".