155404552 has 16 divisors (see below), whose sum is σ = 294895440. Its totient is φ = 76765776.

The previous prime is 155404549. The next prime is 155404577. The reversal of 155404552 is 255404551.

It is a super-3 number, since 3×155404552³ (a number of 26 digits) contains 333 as substring.

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, 116358 + ... + 117685.

It is an arithmetic number, because the mean of its divisors is an integer number (18430965).

Almost surely, 2^155404552 is an apocalyptic number.

It is an amenable number.

155404552 is a deficient number, since it is larger than the sum of its proper divisors (139490888).

155404552 is a wasteful number, since it uses less digits than its factorization.

155404552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234132 (or 234128 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 155404552 is about 12466.1362097484. The cubic root of 155404552 is about 537.6354684324.

Subtracting 155404552 from its reverse (255404551), we obtain a palindrome (99999999).

The spelling of 155404552 in words is "one hundred fifty-five million, four hundred four thousand, five hundred fifty-two".