155416441 has 2 divisors, whose sum is σ = 155416442. Its totient is φ = 155416440.

The previous prime is 155416433. The next prime is 155416519. The reversal of 155416441 is 144614551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153660816 + 1755625 = 12396^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 155416441 - 2³ = 155416433 is a prime.

It is not a weakly prime, because it can be changed into another prime (155416141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77708220 + 77708221.

It is an arithmetic number, because the mean of its divisors is an integer number (77708221).

Almost surely, 2^155416441 is an apocalyptic number.

It is an amenable number.

155416441 is a deficient number, since it is larger than the sum of its proper divisors (1).

155416441 is an equidigital number, since it uses as much as digits as its factorization.

155416441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

The square root of 155416441 is about 12466.6130524694. The cubic root of 155416441 is about 537.6491784235.

The spelling of 155416441 in words is "one hundred fifty-five million, four hundred sixteen thousand, four hundred forty-one".