155871465 has 16 divisors (see below), whose sum is σ = 249680448. Its totient is φ = 83036096.

The previous prime is 155871449. The next prime is 155871473. The reversal of 155871465 is 564178551.

It is a cyclic number.

It is not a de Polignac number, because 155871465 - 2⁴ = 155871449 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8719 + ... + 19691.

It is an arithmetic number, because the mean of its divisors is an integer number (15605028).

Almost surely, 2^155871465 is an apocalyptic number.

155871465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155871465 is a deficient number, since it is larger than the sum of its proper divisors (93808983).

155871465 is a wasteful number, since it uses less digits than its factorization.

155871465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11928.

The product of its digits is 168000, while the sum is 42.

The square root of 155871465 is about 12484.8494183951. The cubic root of 155871465 is about 538.1733720298.

The spelling of 155871465 in words is "one hundred fifty-five million, eight hundred seventy-one thousand, four hundred sixty-five".