155296399 has 2 divisors, whose sum is σ = 155296400. Its totient is φ = 155296398.

The previous prime is 155296277. The next prime is 155296441. The reversal of 155296399 is 993692551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155296399 - 2⁹ = 155295887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155291399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77648199 + 77648200.

It is an arithmetic number, because the mean of its divisors is an integer number (77648200).

Almost surely, 2^155296399 is an apocalyptic number.

155296399 is a deficient number, since it is larger than the sum of its proper divisors (1).

155296399 is an equidigital number, since it uses as much as digits as its factorization.

155296399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 656100, while the sum is 49.

The square root of 155296399 is about 12461.7975830135. The cubic root of 155296399 is about 537.5107179402.

The spelling of 155296399 in words is "one hundred fifty-five million, two hundred ninety-six thousand, three hundred ninety-nine".