1552445137 has 4 divisors (see below), whose sum is σ = 1552545076. Its totient is φ = 1552345200.

The previous prime is 1552445123. The next prime is 1552445161. The reversal of 1552445137 is 7315442551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 640646721 + 911798416 = 25311^2 + 30196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552445137 - 2⁷ = 1552445009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1552445096 and 1552445105.

It is not an unprimeable number, because it can be changed into a prime (1552445437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21114 + ... + 59587.

It is an arithmetic number, because the mean of its divisors is an integer number (388136269).

Almost surely, 2^1552445137 is an apocalyptic number.

It is an amenable number.

1552445137 is a deficient number, since it is larger than the sum of its proper divisors (99939).

1552445137 is an equidigital number, since it uses as much as digits as its factorization.

1552445137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99938.

The product of its digits is 84000, while the sum is 37.

The square root of 1552445137 is about 39401.0804039686. The cubic root of 1552445137 is about 1157.9027545727.

Adding to 1552445137 its reverse (7315442551), we get a palindrome (8867887688).

The spelling of 1552445137 in words is "one billion, five hundred fifty-two million, four hundred forty-five thousand, one hundred thirty-seven".