2451415521 has 16 divisors (see below), whose sum is σ = 3461932224. Its totient is φ = 1537649664.

The previous prime is 2451415471. The next prime is 2451415531. The reversal of 2451415521 is 1255141542.

It is not a de Polignac number, because 2451415521 - 2⁹ = 2451415009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2451415531) 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, 215646 + ... + 226728.

It is an arithmetic number, because the mean of its divisors is an integer number (216370764).

Almost surely, 2^2451415521 is an apocalyptic number.

It is an amenable number.

2451415521 is a deficient number, since it is larger than the sum of its proper divisors (1010516703).

2451415521 is a wasteful number, since it uses less digits than its factorization.

2451415521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15440.

The product of its digits is 8000, while the sum is 30.

The square root of 2451415521 is about 49511.7715397056. The cubic root of 2451415521 is about 1348.3593275907.

The spelling of 2451415521 in words is "two billion, four hundred fifty-one million, four hundred fifteen thousand, five hundred twenty-one".