1553323412 has 6 divisors (see below), whose sum is σ = 2718315978. Its totient is φ = 776661704.

The previous prime is 1553323403. The next prime is 1553323451. The reversal of 1553323412 is 2143233551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1459698436 + 93624976 = 38206^2 + 9676^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194165423 + ... + 194165430.

It is an arithmetic number, because the mean of its divisors is an integer number (453052663).

Almost surely, 2^1553323412 is an apocalyptic number.

It is an amenable number.

1553323412 is a deficient number, since it is larger than the sum of its proper divisors (1164992566).

1553323412 is a wasteful number, since it uses less digits than its factorization.

1553323412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388330857 (or 388330855 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 1553323412 is about 39412.2241442931. The cubic root of 1553323412 is about 1158.1210693891.

Adding to 1553323412 its reverse (2143233551), we get a palindrome (3696556963).

The spelling of 1553323412 in words is "one billion, five hundred fifty-three million, three hundred twenty-three thousand, four hundred twelve".