155157361 has 4 divisors (see below), whose sum is σ = 155182500. Its totient is φ = 155132224.

The previous prime is 155157329. The next prime is 155157367. The reversal of 155157361 is 163751551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 49787136 + 105370225 = 7056^2 + 10265^2 .

It is a cyclic number.

It is not a de Polignac number, because 155157361 - 2⁵ = 155157329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155157367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765 + ... + 18013.

It is an arithmetic number, because the mean of its divisors is an integer number (38795625).

Almost surely, 2^155157361 is an apocalyptic number.

It is an amenable number.

155157361 is a deficient number, since it is larger than the sum of its proper divisors (25139).

155157361 is a wasteful number, since it uses less digits than its factorization.

155157361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25138.

The product of its digits is 15750, while the sum is 34.

The square root of 155157361 is about 12456.2177646347. The cubic root of 155157361 is about 537.3502576200.

The spelling of 155157361 in words is "one hundred fifty-five million, one hundred fifty-seven thousand, three hundred sixty-one".