52453991 has 2 divisors, whose sum is σ = 52453992. Its totient is φ = 52453990.

The previous prime is 52453987. The next prime is 52454029. The reversal of 52453991 is 19935425.

It is an a-pointer prime, because the next prime (52454029) can be obtained adding 52453991 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52453991 - 2² = 52453987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52453691) 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, 26226995 + 26226996.

It is an arithmetic number, because the mean of its divisors is an integer number (26226996).

Almost surely, 2^52453991 is an apocalyptic number.

52453991 is a deficient number, since it is larger than the sum of its proper divisors (1).

52453991 is an equidigital number, since it uses as much as digits as its factorization.

52453991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 38.

The square root of 52453991 is about 7242.5127545625. The cubic root of 52453991 is about 374.3342046846.

The spelling of 52453991 in words is "fifty-two million, four hundred fifty-three thousand, nine hundred ninety-one".