1553040345 has 16 divisors (see below), whose sum is σ = 2485372032. Its totient is φ = 828119040.

The previous prime is 1553040341. The next prime is 1553040361. The reversal of 1553040345 is 5430403551.

It is not a de Polignac number, because 1553040345 - 2² = 1553040341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1553040341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108825 + ... + 122265.

It is an arithmetic number, because the mean of its divisors is an integer number (155335752).

Almost surely, 2^1553040345 is an apocalyptic number.

1553040345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1553040345 is a deficient number, since it is larger than the sum of its proper divisors (932331687).

1553040345 is a wasteful number, since it uses less digits than its factorization.

1553040345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21152.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1553040345 is about 39408.6328740290. The cubic root of 1553040345 is about 1158.0507157698.

Adding to 1553040345 its reverse (5430403551), we get a palindrome (6983443896).

The spelling of 1553040345 in words is "one billion, five hundred fifty-three million, forty thousand, three hundred forty-five".