155564452 has 6 divisors (see below), whose sum is σ = 272237798. Its totient is φ = 77782224.

The previous prime is 155564449. The next prime is 155564477. The reversal of 155564452 is 254465551.

It can be written as a sum of positive squares in only one way, i.e., 129185956 + 26378496 = 11366^2 + 5136^2 .

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 as a sum of consecutive naturals, namely, 19445553 + ... + 19445560.

Almost surely, 2^155564452 is an apocalyptic number.

It is an amenable number.

155564452 is a deficient number, since it is larger than the sum of its proper divisors (116673346).

155564452 is a wasteful number, since it uses less digits than its factorization.

155564452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38891117 (or 38891115 counting only the distinct ones).

The product of its digits is 120000, while the sum is 37.

The square root of 155564452 is about 12472.5479353659. The cubic root of 155564452 is about 537.8198011782.

The spelling of 155564452 in words is "one hundred fifty-five million, five hundred sixty-four thousand, four hundred fifty-two".