264435551 has 2 divisors, whose sum is σ = 264435552. Its totient is φ = 264435550.

The previous prime is 264435547. The next prime is 264435553. The reversal of 264435551 is 155534462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264435551 - 2² = 264435547 is a prime.

Together with 264435553, 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 (264435553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132217775 + 132217776.

It is an arithmetic number, because the mean of its divisors is an integer number (132217776).

Almost surely, 2^264435551 is an apocalyptic number.

264435551 is a deficient number, since it is larger than the sum of its proper divisors (1).

264435551 is an equidigital number, since it uses as much as digits as its factorization.

264435551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 35.

The square root of 264435551 is about 16261.4744411446. The cubic root of 264435551 is about 641.8594612517.

The spelling of 264435551 in words is "two hundred sixty-four million, four hundred thirty-five thousand, five hundred fifty-one".