1553201116 has 6 divisors (see below), whose sum is σ = 2718101960. Its totient is φ = 776600556.

The previous prime is 1553201101. The next prime is 1553201119. The reversal of 1553201116 is 6111023551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553201119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194150136 + ... + 194150143.

Almost surely, 2^1553201116 is an apocalyptic number.

It is an amenable number.

1553201116 is a deficient number, since it is larger than the sum of its proper divisors (1164900844).

1553201116 is a wasteful number, since it uses less digits than its factorization.

1553201116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388300283 (or 388300281 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1553201116 is about 39410.6726154223. The cubic root of 1553201116 is about 1158.0906749265.

Adding to 1553201116 its reverse (6111023551), we get a palindrome (7664224667).

The spelling of 1553201116 in words is "one billion, five hundred fifty-three million, two hundred one thousand, one hundred sixteen".