406422551 has 2 divisors, whose sum is σ = 406422552. Its totient is φ = 406422550.

The previous prime is 406422547. The next prime is 406422563. The reversal of 406422551 is 155224604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406422551 - 2² = 406422547 is a prime.

It is a super-2 number, since 2×406422551² = 330358579922695202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406422251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203211275 + 203211276.

It is an arithmetic number, because the mean of its divisors is an integer number (203211276).

Almost surely, 2^406422551 is an apocalyptic number.

406422551 is a deficient number, since it is larger than the sum of its proper divisors (1).

406422551 is an equidigital number, since it uses as much as digits as its factorization.

406422551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 406422551 is about 20159.9243798185. The cubic root of 406422551 is about 740.7288600358.

The spelling of 406422551 in words is "four hundred six million, four hundred twenty-two thousand, five hundred fifty-one".