155320552 has 16 divisors (see below), whose sum is σ = 291426660. Its totient is φ = 77606784.

The previous prime is 155320547. The next prime is 155320577. The reversal of 155320552 is 255023551.

It can be written as a sum of positive squares in 2 ways, for example, as 125574436 + 29746116 = 11206^2 + 5454^2 .

It is a super-3 number, since 3×155320552³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155320552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7398 + ... + 19114.

Almost surely, 2^155320552 is an apocalyptic number.

It is an amenable number.

155320552 is a deficient number, since it is larger than the sum of its proper divisors (136106108).

155320552 is a wasteful number, since it uses less digits than its factorization.

155320552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13380 (or 13376 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 155320552 is about 12462.7666270375. The cubic root of 155320552 is about 537.5385825558.

The spelling of 155320552 in words is "one hundred fifty-five million, three hundred twenty thousand, five hundred fifty-two".