155655001 has 2 divisors, whose sum is σ = 155655002. Its totient is φ = 155655000.

The previous prime is 155654987. The next prime is 155655091. The reversal of 155655001 is 100556551.

155655001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106584976 + 49070025 = 10324^2 + 7005^2 .

It is a cyclic number.

It is not a de Polignac number, because 155655001 - 2¹³ = 155646809 is a prime.

It is not a weakly prime, because it can be changed into another prime (155655091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77827500 + 77827501.

It is an arithmetic number, because the mean of its divisors is an integer number (77827501).

Almost surely, 2^155655001 is an apocalyptic number.

It is an amenable number.

155655001 is a deficient number, since it is larger than the sum of its proper divisors (1).

155655001 is an equidigital number, since it uses as much as digits as its factorization.

155655001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 155655001 is about 12476.1773392334. The cubic root of 155655001 is about 537.9241300676.

The spelling of 155655001 in words is "one hundred fifty-five million, six hundred fifty-five thousand, one".