155036641 has 2 divisors, whose sum is σ = 155036642. Its totient is φ = 155036640.

The previous prime is 155036603. The next prime is 155036669. The reversal of 155036641 is 146630551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123676641 + 31360000 = 11121^2 + 5600^2 .

It is an emirp because it is prime and its reverse (146630551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155036641 - 2¹³ = 155028449 is a prime.

It is not a weakly prime, because it can be changed into another prime (155036341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77518320 + 77518321.

It is an arithmetic number, because the mean of its divisors is an integer number (77518321).

Almost surely, 2^155036641 is an apocalyptic number.

It is an amenable number.

155036641 is a deficient number, since it is larger than the sum of its proper divisors (1).

155036641 is an equidigital number, since it uses as much as digits as its factorization.

155036641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 155036641 is about 12451.3710490050. The cubic root of 155036641 is about 537.2108598850.

The spelling of 155036641 in words is "one hundred fifty-five million, thirty-six thousand, six hundred forty-one".