155072641 has 2 divisors, whose sum is σ = 155072642. Its totient is φ = 155072640.

The previous prime is 155072627. The next prime is 155072681. The reversal of 155072641 is 146270551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145709041 + 9363600 = 12071^2 + 3060^2 .

It is a cyclic number.

It is not a de Polignac number, because 155072641 - 2¹⁷ = 154941569 is a prime.

It is not a weakly prime, because it can be changed into another prime (155072681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77536320 + 77536321.

It is an arithmetic number, because the mean of its divisors is an integer number (77536321).

Almost surely, 2^155072641 is an apocalyptic number.

It is an amenable number.

155072641 is a deficient number, since it is larger than the sum of its proper divisors (1).

155072641 is an equidigital number, since it uses as much as digits as its factorization.

155072641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 155072641 is about 12452.8165890292. The cubic root of 155072641 is about 537.2524373558.

The spelling of 155072641 in words is "one hundred fifty-five million, seventy-two thousand, six hundred forty-one".