155226531 has 8 divisors (see below), whose sum is σ = 214105680. Its totient is φ = 99915872.

The previous prime is 155226527. The next prime is 155226551. The reversal of 155226531 is 135622551.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 155226531 - 2² = 155226527 is a prime.

It is a super-2 number, since 2×155226531² = 48190551852587922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155226521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892020 + ... + 892193.

It is an arithmetic number, because the mean of its divisors is an integer number (26763210).

Almost surely, 2^155226531 is an apocalyptic number.

155226531 is a deficient number, since it is larger than the sum of its proper divisors (58879149).

155226531 is a wasteful number, since it uses less digits than its factorization.

155226531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784245.

The product of its digits is 9000, while the sum is 30.

The square root of 155226531 is about 12458.9939802538. The cubic root of 155226531 is about 537.4300969847.

The spelling of 155226531 in words is "one hundred fifty-five million, two hundred twenty-six thousand, five hundred thirty-one".