155561046 has 32 divisors (see below), whose sum is σ = 323136000. Its totient is φ = 49865760.

The previous prime is 155561027. The next prime is 155561051. The reversal of 155561046 is 640165551.

It is a super-2 number, since 2×155561046² = 48398478065228232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155560998 and 155561016.

It is a congruent number.

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, 45505 + ... + 48803.

It is an arithmetic number, because the mean of its divisors is an integer number (10098000).

Almost surely, 2^155561046 is an apocalyptic number.

155561046 is an abundant number, since it is smaller than the sum of its proper divisors (167574954).

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

155561046 is a wasteful number, since it uses less digits than its factorization.

155561046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 155561046 is about 12472.4113947544. The cubic root of 155561046 is about 537.8158760578.

The spelling of 155561046 in words is "one hundred fifty-five million, five hundred sixty-one thousand, forty-six".