155712701 has 2 divisors, whose sum is σ = 155712702. Its totient is φ = 155712700.

The previous prime is 155712647. The next prime is 155712703. The reversal of 155712701 is 107217551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154504900 + 1207801 = 12430^2 + 1099^2 .

It is a cyclic number.

It is not a de Polignac number, because 155712701 - 2²² = 151518397 is a prime.

Together with 155712703, 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 (155712703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77856350 + 77856351.

It is an arithmetic number, because the mean of its divisors is an integer number (77856351).

Almost surely, 2^155712701 is an apocalyptic number.

It is an amenable number.

155712701 is a deficient number, since it is larger than the sum of its proper divisors (1).

155712701 is an equidigital number, since it uses as much as digits as its factorization.

155712701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2450, while the sum is 29.

The square root of 155712701 is about 12478.4895319906. The cubic root of 155712701 is about 537.9905898402.

The spelling of 155712701 in words is "one hundred fifty-five million, seven hundred twelve thousand, seven hundred one".