1553450115 has 32 divisors (see below), whose sum is σ = 2842076160. Its totient is φ = 709778304.

The previous prime is 1553450113. The next prime is 1553450149. The reversal of 1553450115 is 5110543551.

It is not a de Polignac number, because 1553450115 - 2¹ = 1553450113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1553450113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371617 + ... + 375773.

It is an arithmetic number, because the mean of its divisors is an integer number (88814880).

Almost surely, 2^1553450115 is an apocalyptic number.

1553450115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1553450115 is a deficient number, since it is larger than the sum of its proper divisors (1288626045).

1553450115 is a wasteful number, since it uses less digits than its factorization.

1553450115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 1553450115 is about 39413.8315188970. The cubic root of 1553450115 is about 1158.1525574496.

Adding to 1553450115 its reverse (5110543551), we get a palindrome (6663993666).

The spelling of 1553450115 in words is "one billion, five hundred fifty-three million, four hundred fifty thousand, one hundred fifteen".