2451121461 has 6 divisors (see below), whose sum is σ = 3540508790. Its totient is φ = 1634080968.

The previous prime is 2451121457. The next prime is 2451121469. The reversal of 2451121461 is 1641211542.

2451121461 is a `hidden beast` number, since 2 + 4 + 511 + 2 + 146 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2314091025 + 137030436 = 48105^2 + 11706^2 .

It is not a de Polignac number, because 2451121461 - 2² = 2451121457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451121469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136173406 + ... + 136173423.

Almost surely, 2^2451121461 is an apocalyptic number.

It is an amenable number.

2451121461 is a deficient number, since it is larger than the sum of its proper divisors (1089387329).

2451121461 is a wasteful number, since it uses less digits than its factorization.

2451121461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272346835 (or 272346832 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2451121461 is about 49508.8018538118. The cubic root of 2451121461 is about 1348.3054112044.

The spelling of 2451121461 in words is "two billion, four hundred fifty-one million, one hundred twenty-one thousand, four hundred sixty-one".