155279567 has 2 divisors, whose sum is σ = 155279568. Its totient is φ = 155279566.

The previous prime is 155279561. The next prime is 155279569. The reversal of 155279567 is 765972551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155279567 - 2⁶ = 155279503 is a prime.

It is a super-2 number, since 2×155279567² = 48223487855414978, which contains 22 as substring.

Together with 155279569, 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 (155279561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77639783 + 77639784.

It is an arithmetic number, because the mean of its divisors is an integer number (77639784).

Almost surely, 2^155279567 is an apocalyptic number.

155279567 is a deficient number, since it is larger than the sum of its proper divisors (1).

155279567 is an equidigital number, since it uses as much as digits as its factorization.

155279567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 661500, while the sum is 47.

The square root of 155279567 is about 12461.1222207312. The cubic root of 155279567 is about 537.4912976417.

The spelling of 155279567 in words is "one hundred fifty-five million, two hundred seventy-nine thousand, five hundred sixty-seven".