1552488381 has 6 divisors (see below), whose sum is σ = 2242483230. Its totient is φ = 1034992248.

The previous prime is 1552488361. The next prime is 1552488391. The reversal of 1552488381 is 1838842551.

1552488381 is a `hidden beast` number, since 15 + 524 + 88 + 38 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1443620025 + 108868356 = 37995^2 + 10434^2 .

It is not a de Polignac number, because 1552488381 - 2⁹ = 1552487869 is a prime.

It is a super-2 number, since 2×1552488381² = 4820440346280002322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552488361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86249346 + ... + 86249363.

It is an arithmetic number, because the mean of its divisors is an integer number (373747205).

Almost surely, 2^1552488381 is an apocalyptic number.

It is an amenable number.

1552488381 is a deficient number, since it is larger than the sum of its proper divisors (689994849).

1552488381 is a wasteful number, since it uses less digits than its factorization.

1552488381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172498715 (or 172498712 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 1552488381 is about 39401.6291668251. The cubic root of 1552488381 is about 1157.9135057592.

The spelling of 1552488381 in words is "one billion, five hundred fifty-two million, four hundred eighty-eight thousand, three hundred eighty-one".