155732641 has 2 divisors, whose sum is σ = 155732642. Its totient is φ = 155732640.

The previous prime is 155732611. The next prime is 155732737. The reversal of 155732641 is 146237551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115777600 + 39955041 = 10760^2 + 6321^2 .

It is an emirp because it is prime and its reverse (146237551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155732641 - 2¹³ = 155724449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155732597 and 155732606.

It is not a weakly prime, because it can be changed into another prime (155732611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77866320 + 77866321.

It is an arithmetic number, because the mean of its divisors is an integer number (77866321).

Almost surely, 2^155732641 is an apocalyptic number.

It is an amenable number.

155732641 is a deficient number, since it is larger than the sum of its proper divisors (1).

155732641 is an equidigital number, since it uses as much as digits as its factorization.

155732641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 155732641 is about 12479.2884813198. The cubic root of 155732641 is about 538.0135532302.

The spelling of 155732641 in words is "one hundred fifty-five million, seven hundred thirty-two thousand, six hundred forty-one".