152855561 has 2 divisors, whose sum is σ = 152855562. Its totient is φ = 152855560.

The previous prime is 152855537. The next prime is 152855579. The reversal of 152855561 is 165558251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132963961 + 19891600 = 11531^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 152855561 - 2²² = 148661257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (152855501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76427780 + 76427781.

It is an arithmetic number, because the mean of its divisors is an integer number (76427781).

Almost surely, 2^152855561 is an apocalyptic number.

It is an amenable number.

152855561 is a deficient number, since it is larger than the sum of its proper divisors (1).

152855561 is an equidigital number, since it uses as much as digits as its factorization.

152855561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60000, while the sum is 38.

The square root of 152855561 is about 12363.4768977016. The cubic root of 152855561 is about 534.6797640998.

The spelling of 152855561 in words is "one hundred fifty-two million, eight hundred fifty-five thousand, five hundred sixty-one".