1553231402 has 8 divisors (see below), whose sum is σ = 2336886912. Its totient is φ = 774269100.

The previous prime is 1553231371. The next prime is 1553231431. The reversal of 1553231402 is 2041323551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1172474 + ... + 1173797.

It is an arithmetic number, because the mean of its divisors is an integer number (292110864).

Almost surely, 2^1553231402 is an apocalyptic number.

1553231402 is a deficient number, since it is larger than the sum of its proper divisors (783655510).

1553231402 is a wasteful number, since it uses less digits than its factorization.

1553231402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346604.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1553231402 is about 39411.0568495695. The cubic root of 1553231402 is about 1158.0982021136.

Adding to 1553231402 its reverse (2041323551), we get a palindrome (3594554953).

The spelling of 1553231402 in words is "one billion, five hundred fifty-three million, two hundred thirty-one thousand, four hundred two".