515054421 has 24 divisors (see below), whose sum is σ = 855017280. Its totient is φ = 292666176.

The previous prime is 515054417. The next prime is 515054437. The reversal of 515054421 is 124450515.

515054421 is a `hidden beast` number, since 51 + 50 + 544 + 21 = 666.

It is not a de Polignac number, because 515054421 - 2² = 515054417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515054411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11560 + ... + 34113.

It is an arithmetic number, because the mean of its divisors is an integer number (35625720).

Almost surely, 2^515054421 is an apocalyptic number.

It is an amenable number.

515054421 is a deficient number, since it is larger than the sum of its proper divisors (339962859).

515054421 is a wasteful number, since it uses less digits than its factorization.

515054421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45865 (or 45862 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 515054421 is about 22694.8104420372. The cubic root of 515054421 is about 801.5876912320.

The spelling of 515054421 in words is "five hundred fifteen million, fifty-four thousand, four hundred twenty-one".