1155621532 has 12 divisors (see below), whose sum is σ = 2177902216. Its totient is φ = 533363760.

The previous prime is 1155621473. The next prime is 1155621539. The reversal of 1155621532 is 2351265511.

It is a super-2 number, since 2×1155621532² = 2670922250444054048, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1155621494 and 1155621503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155621539) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11111694 + ... + 11111797.

Almost surely, 2^1155621532 is an apocalyptic number.

It is an amenable number.

1155621532 is a deficient number, since it is larger than the sum of its proper divisors (1022280684).

1155621532 is a wasteful number, since it uses less digits than its factorization.

1155621532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22223508 (or 22223506 counting only the distinct ones).

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

The square root of 1155621532 is about 33994.4338384977. The cubic root of 1155621532 is about 1049.3939153760.

The spelling of 1155621532 in words is "one billion, one hundred fifty-five million, six hundred twenty-one thousand, five hundred thirty-two".