52991501 has 2 divisors, whose sum is σ = 52991502. Its totient is φ = 52991500.

The previous prime is 52991483. The next prime is 52991507. The reversal of 52991501 is 10519925.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51466276 + 1525225 = 7174^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 52991501 - 2¹⁰ = 52990477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52991507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26495750 + 26495751.

It is an arithmetic number, because the mean of its divisors is an integer number (26495751).

Almost surely, 2^52991501 is an apocalyptic number.

It is an amenable number.

52991501 is a deficient number, since it is larger than the sum of its proper divisors (1).

52991501 is an equidigital number, since it uses as much as digits as its factorization.

52991501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 52991501 is about 7279.5261521613. The cubic root of 52991501 is about 375.6084959383.

The spelling of 52991501 in words is "fifty-two million, nine hundred ninety-one thousand, five hundred one".