155572946 has 8 divisors (see below), whose sum is σ = 233486064. Its totient is φ = 77744260.

The previous prime is 155572909. The next prime is 155572993. The reversal of 155572946 is 649275551.

It is a happy number.

155572946 is digitally balanced in base 2, because in such base 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.

It is a super-3 number, since 3×155572946³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155572897 and 155572906.

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, 16280 + ... + 24003.

It is an arithmetic number, because the mean of its divisors is an integer number (29185758).

Almost surely, 2^155572946 is an apocalyptic number.

155572946 is a deficient number, since it is larger than the sum of its proper divisors (77913118).

155572946 is a wasteful number, since it uses less digits than its factorization.

155572946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42216.

The product of its digits is 378000, while the sum is 44.

The square root of 155572946 is about 12472.8884385294. Note that the first 3 decimals coincide. The cubic root of 155572946 is about 537.8295895289.

The spelling of 155572946 in words is "one hundred fifty-five million, five hundred seventy-two thousand, nine hundred forty-six".