455121551 has 2 divisors, whose sum is σ = 455121552. Its totient is φ = 455121550.

The previous prime is 455121517. The next prime is 455121559. The reversal of 455121551 is 155121554.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455121551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455121559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227560775 + 227560776.

It is an arithmetic number, because the mean of its divisors is an integer number (227560776).

Almost surely, 2^455121551 is an apocalyptic number.

455121551 is a deficient number, since it is larger than the sum of its proper divisors (1).

455121551 is an equidigital number, since it uses as much as digits as its factorization.

455121551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000, while the sum is 29.

The square root of 455121551 is about 21333.5780168260. The cubic root of 455121551 is about 769.2056523971.

The spelling of 455121551 in words is "four hundred fifty-five million, one hundred twenty-one thousand, five hundred fifty-one".