1552401231 has 4 divisors (see below), whose sum is σ = 2069868312. Its totient is φ = 1034934152.

The previous prime is 1552401197. The next prime is 1552401239. The reversal of 1552401231 is 1321042551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1552401231 - 2²⁵ = 1518846799 is a prime.

It is a super-2 number, since 2×1552401231² = 4819899164020630722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552401239) 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 3 ways as a sum of consecutive naturals, for example, 258733536 + ... + 258733541.

It is an arithmetic number, because the mean of its divisors is an integer number (517467078).

Almost surely, 2^1552401231 is an apocalyptic number.

1552401231 is a deficient number, since it is larger than the sum of its proper divisors (517467081).

1552401231 is an equidigital number, since it uses as much as digits as its factorization.

1552401231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517467080.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1552401231 is about 39400.5232325663. The cubic root of 1552401231 is about 1157.8918385975.

Adding to 1552401231 its reverse (1321042551), we get a palindrome (2873443782).

The spelling of 1552401231 in words is "one billion, five hundred fifty-two million, four hundred one thousand, two hundred thirty-one".