155561134 has 8 divisors (see below), whose sum is σ = 239033088. Its totient is φ = 75883440.

The previous prime is 155561123. The next prime is 155561137. The reversal of 155561134 is 431165551.

It is a happy number.

155561134 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-2 number, since 2×155561134² = 48398532822731912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155561096 and 155561105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155561137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 948462 + ... + 948625.

It is an arithmetic number, because the mean of its divisors is an integer number (29879136).

Almost surely, 2^155561134 is an apocalyptic number.

155561134 is a deficient number, since it is larger than the sum of its proper divisors (83471954).

155561134 is a wasteful number, since it uses less digits than its factorization.

155561134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897130.

The product of its digits is 9000, while the sum is 31.

The square root of 155561134 is about 12472.4149225401. The cubic root of 155561134 is about 537.8159774709.

The spelling of 155561134 in words is "one hundred fifty-five million, five hundred sixty-one thousand, one hundred thirty-four".