155374691 has 2 divisors, whose sum is σ = 155374692. Its totient is φ = 155374690.

The previous prime is 155374651. The next prime is 155374711. The reversal of 155374691 is 196473551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155374691 - 2⁶ = 155374627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155374651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77687345 + 77687346.

It is an arithmetic number, because the mean of its divisors is an integer number (77687346).

Almost surely, 2^155374691 is an apocalyptic number.

155374691 is a deficient number, since it is larger than the sum of its proper divisors (1).

155374691 is an equidigital number, since it uses as much as digits as its factorization.

155374691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 155374691 is about 12464.9384675577. The cubic root of 155374691 is about 537.6010306571.

The spelling of 155374691 in words is "one hundred fifty-five million, three hundred seventy-four thousand, six hundred ninety-one".