1552400313 has 4 divisors (see below), whose sum is σ = 2069867088. Its totient is φ = 1034933540.

The previous prime is 1552400287. The next prime is 1552400321. The reversal of 1552400313 is 3130042551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1552400313 - 2⁵ = 1552400281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1552405313) 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, 258733383 + ... + 258733388.

It is an arithmetic number, because the mean of its divisors is an integer number (517466772).

Almost surely, 2^1552400313 is an apocalyptic number.

It is an amenable number.

1552400313 is a deficient number, since it is larger than the sum of its proper divisors (517466775).

1552400313 is an equidigital number, since it uses as much as digits as its factorization.

1552400313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517466774.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1552400313 is about 39400.5115829731. The cubic root of 1552400313 is about 1157.8916103608.

Adding to 1552400313 its reverse (3130042551), we get a palindrome (4682442864).

The spelling of 1552400313 in words is "one billion, five hundred fifty-two million, four hundred thousand, three hundred thirteen".