1553213120 has 28 divisors (see below), whose sum is σ = 3698589504. Its totient is φ = 621285120.

The previous prime is 1553213099. The next prime is 1553213131. The reversal of 1553213120 is 213123551.

It is a happy number.

It is a super-2 number, since 2×1553213120² = 4824941992280268800, which contains 22 as substring.

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, 2426576 + ... + 2427215.

Almost surely, 2^1553213120 is an apocalyptic number.

1553213120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553213120 is an abundant number, since it is smaller than the sum of its proper divisors (2145376384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1553213120 is an equidigital number, since it uses as much as digits as its factorization.

1553213120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4853808 (or 4853798 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1553213120 is about 39410.8249089003. The cubic root of 1553213120 is about 1158.0936583745.

Adding to 1553213120 its reverse (213123551), we get a palindrome (1766336671).

The spelling of 1553213120 in words is "one billion, five hundred fifty-three million, two hundred thirteen thousand, one hundred twenty".