155274851 has 2 divisors, whose sum is σ = 155274852. Its totient is φ = 155274850.

The previous prime is 155274811. The next prime is 155274853. The reversal of 155274851 is 158472551.

It is a strong prime.

It is an emirp because it is prime and its reverse (158472551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155274851 - 2¹⁸ = 155012707 is a prime.

It is a super-2 number, since 2×155274851² = 48220558706144402, which contains 22 as substring.

Together with 155274853, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155274853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77637425 + 77637426.

It is an arithmetic number, because the mean of its divisors is an integer number (77637426).

Almost surely, 2^155274851 is an apocalyptic number.

155274851 is a deficient number, since it is larger than the sum of its proper divisors (1).

155274851 is an equidigital number, since it uses as much as digits as its factorization.

155274851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56000, while the sum is 38.

The square root of 155274851 is about 12460.9329907515. The cubic root of 155274851 is about 537.4858561989.

The spelling of 155274851 in words is "one hundred fifty-five million, two hundred seventy-four thousand, eight hundred fifty-one".