992420551 has 2 divisors, whose sum is σ = 992420552. Its totient is φ = 992420550.

The previous prime is 992420531. The next prime is 992420563. The reversal of 992420551 is 155024299.

It is a strong prime.

It is an emirp because it is prime and its reverse (155024299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 992420551 - 2⁵ = 992420519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 992420551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (992420501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496210275 + 496210276.

It is an arithmetic number, because the mean of its divisors is an integer number (496210276).

Almost surely, 2^992420551 is an apocalyptic number.

992420551 is a deficient number, since it is larger than the sum of its proper divisors (1).

992420551 is an equidigital number, since it uses as much as digits as its factorization.

992420551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 992420551 is about 31502.7070424115. The cubic root of 992420551 is about 997.4671068690.

The spelling of 992420551 in words is "nine hundred ninety-two million, four hundred twenty thousand, five hundred fifty-one".