155451655 has 24 divisors (see below), whose sum is σ = 199599120. Its totient is φ = 116198400.

The previous prime is 155451601. The next prime is 155451671. The reversal of 155451655 is 556154551.

It is not a de Polignac number, because 155451655 - 2¹¹ = 155449607 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258355 + ... + 258955.

It is an arithmetic number, because the mean of its divisors is an integer number (8316630).

Almost surely, 2^155451655 is an apocalyptic number.

155451655 is a deficient number, since it is larger than the sum of its proper divisors (44147465).

155451655 is a wasteful number, since it uses less digits than its factorization.

155451655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 802 counting only the distinct ones).

The product of its digits is 75000, while the sum is 37.

The square root of 155451655 is about 12468.0253047546. The cubic root of 155451655 is about 537.6897819108.

The spelling of 155451655 in words is "one hundred fifty-five million, four hundred fifty-one thousand, six hundred fifty-five".