615155423 has 2 divisors, whose sum is σ = 615155424. Its totient is φ = 615155422.

The previous prime is 615155369. The next prime is 615155467. The reversal of 615155423 is 324551516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 615155423 - 2¹⁰ = 615154399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 615155423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615155323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307577711 + 307577712.

It is an arithmetic number, because the mean of its divisors is an integer number (307577712).

Almost surely, 2^615155423 is an apocalyptic number.

615155423 is a deficient number, since it is larger than the sum of its proper divisors (1).

615155423 is an equidigital number, since it uses as much as digits as its factorization.

615155423 is an evil number, because the sum of its binary digits is even.

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

The square root of 615155423 is about 24802.3269674440. The cubic root of 615155423 is about 850.4751313637.

The spelling of 615155423 in words is "six hundred fifteen million, one hundred fifty-five thousand, four hundred twenty-three".