1551145265 has 16 divisors (see below), whose sum is σ = 1923167232. Its totient is φ = 1200124224.

The previous prime is 1551145261. The next prime is 1551145273. The reversal of 1551145265 is 5625411551.

It is a cyclic number.

It is not a de Polignac number, because 1551145265 - 2² = 1551145261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551145261) 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, 5792 + ... + 55998.

It is an arithmetic number, because the mean of its divisors is an integer number (120197952).

Almost surely, 2^1551145265 is an apocalyptic number.

It is an amenable number.

1551145265 is a deficient number, since it is larger than the sum of its proper divisors (372021967).

1551145265 is a wasteful number, since it uses less digits than its factorization.

1551145265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50416.

The product of its digits is 30000, while the sum is 35.

The square root of 1551145265 is about 39384.5815643635. The cubic root of 1551145265 is about 1157.5794912653.

The spelling of 1551145265 in words is "one billion, five hundred fifty-one million, one hundred forty-five thousand, two hundred sixty-five".