901623551 has 2 divisors, whose sum is σ = 901623552. Its totient is φ = 901623550.

The previous prime is 901623523. The next prime is 901623553. The reversal of 901623551 is 155326109.

It is a strong prime.

It is an emirp because it is prime and its reverse (155326109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 901623551 - 2¹⁴ = 901607167 is a prime.

Together with 901623553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901623553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450811775 + 450811776.

It is an arithmetic number, because the mean of its divisors is an integer number (450811776).

Almost surely, 2^901623551 is an apocalyptic number.

901623551 is a deficient number, since it is larger than the sum of its proper divisors (1).

901623551 is an equidigital number, since it uses as much as digits as its factorization.

901623551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 901623551 is about 30027.0469910046. The cubic root of 901623551 is about 966.0695992816.

The spelling of 901623551 in words is "nine hundred one million, six hundred twenty-three thousand, five hundred fifty-one".