155240552 has 8 divisors (see below), whose sum is σ = 291076050. Its totient is φ = 77620272.

The previous prime is 155240537. The next prime is 155240557. The reversal of 155240552 is 255042551.

It can be written as a sum of positive squares in only one way, i.e., 153908836 + 1331716 = 12406^2 + 1154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (155240557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9702527 + ... + 9702542.

Almost surely, 2^155240552 is an apocalyptic number.

It is an amenable number.

155240552 is a deficient number, since it is larger than the sum of its proper divisors (135835498).

155240552 is a wasteful number, since it uses less digits than its factorization.

155240552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19405075 (or 19405071 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 155240552 is about 12459.5566534287. The cubic root of 155240552 is about 537.4462778108.

The spelling of 155240552 in words is "one hundred fifty-five million, two hundred forty thousand, five hundred fifty-two".