1356240551 has 2 divisors, whose sum is σ = 1356240552. Its totient is φ = 1356240550.

The previous prime is 1356240547. The next prime is 1356240553. The reversal of 1356240551 is 1550426531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1356240551 - 2² = 1356240547 is a prime.

Together with 1356240553, 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 (1356240553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678120275 + 678120276.

It is an arithmetic number, because the mean of its divisors is an integer number (678120276).

Almost surely, 2^1356240551 is an apocalyptic number.

1356240551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356240551 is an equidigital number, since it uses as much as digits as its factorization.

1356240551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1356240551 is about 36827.1713684339. The cubic root of 1356240551 is about 1106.9098237993.

The spelling of 1356240551 in words is "one billion, three hundred fifty-six million, two hundred forty thousand, five hundred fifty-one".