155040646 has 32 divisors (see below), whose sum is σ = 261740160. Its totient is φ = 68443776.

The previous prime is 155040637. The next prime is 155040659. The reversal of 155040646 is 646040551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68001 + ... + 70243.

It is an arithmetic number, because the mean of its divisors is an integer number (8179380).

Almost surely, 2^155040646 is an apocalyptic number.

155040646 is a deficient number, since it is larger than the sum of its proper divisors (106699514).

155040646 is a wasteful number, since it uses less digits than its factorization.

155040646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 155040646 is about 12451.5318736290. The cubic root of 155040646 is about 537.2154856968.

The spelling of 155040646 in words is "one hundred fifty-five million, forty thousand, six hundred forty-six".