155055541 has 2 divisors, whose sum is σ = 155055542. Its totient is φ = 155055540.

The previous prime is 155055499. The next prime is 155055557. The reversal of 155055541 is 145550551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119902500 + 35153041 = 10950^2 + 5929^2 .

It is an emirp because it is prime and its reverse (145550551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155055541 - 2¹³ = 155047349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155055041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77527770 + 77527771.

It is an arithmetic number, because the mean of its divisors is an integer number (77527771).

Almost surely, 2^155055541 is an apocalyptic number.

It is an amenable number.

155055541 is a deficient number, since it is larger than the sum of its proper divisors (1).

155055541 is an equidigital number, since it uses as much as digits as its factorization.

155055541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 155055541 is about 12452.1299784414. The cubic root of 155055541 is about 537.2326888596.

The spelling of 155055541 in words is "one hundred fifty-five million, fifty-five thousand, five hundred forty-one".