155064774 has 8 divisors (see below), whose sum is σ = 310129560. Its totient is φ = 51688256.

The previous prime is 155064739. The next prime is 155064787. The reversal of 155064774 is 477460551.

155064774 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

155064774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12922059 + ... + 12922070.

It is an arithmetic number, because the mean of its divisors is an integer number (38766195).

Almost surely, 2^155064774 is an apocalyptic number.

155064774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155064774 is a wasteful number, since it uses less digits than its factorization.

155064774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25844134.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 155064774 is about 12452.5007127083. The cubic root of 155064774 is about 537.2433520730.

The spelling of 155064774 in words is "one hundred fifty-five million, sixty-four thousand, seven hundred seventy-four".