155465891 has 8 divisors (see below), whose sum is σ = 182009184. Its totient is φ = 130006080.

The previous prime is 155465887. The next prime is 155465911. The reversal of 155465891 is 198564551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155465891 - 2² = 155465887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155465291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270560 + ... + 271133.

It is an arithmetic number, because the mean of its divisors is an integer number (22751148).

Almost surely, 2^155465891 is an apocalyptic number.

155465891 is a deficient number, since it is larger than the sum of its proper divisors (26543293).

155465891 is an equidigital number, since it uses as much as digits as its factorization.

155465891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541741.

The product of its digits is 216000, while the sum is 44.

The square root of 155465891 is about 12468.5961920338. The cubic root of 155465891 is about 537.7061949838.

The spelling of 155465891 in words is "one hundred fifty-five million, four hundred sixty-five thousand, eight hundred ninety-one".