155976481 has 4 divisors (see below), whose sum is σ = 156034372. Its totient is φ = 155918592.

The previous prime is 155976473. The next prime is 155976511. The reversal of 155976481 is 184679551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41486481 + 114490000 = 6441^2 + 10700^2 .

It is a cyclic number.

It is not a de Polignac number, because 155976481 - 2³ = 155976473 is a prime.

It is a super-2 number, since 2×155976481² = 48657325250286722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155973481) 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, 24696 + ... + 30361.

It is an arithmetic number, because the mean of its divisors is an integer number (39008593).

Almost surely, 2^155976481 is an apocalyptic number.

It is an amenable number.

155976481 is a deficient number, since it is larger than the sum of its proper divisors (57891).

155976481 is an equidigital number, since it uses as much as digits as its factorization.

155976481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57890.

The product of its digits is 302400, while the sum is 46.

The square root of 155976481 is about 12489.0544477955. The cubic root of 155976481 is about 538.2942069052.

The spelling of 155976481 in words is "one hundred fifty-five million, nine hundred seventy-six thousand, four hundred eighty-one".