51295449 has 8 divisors (see below), whose sum is σ = 69515392. Its totient is φ = 33636240.

The previous prime is 51295429. The next prime is 51295457. The reversal of 51295449 is 94459215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51295449 - 2¹² = 51291353 is a prime.

It is a super-2 number, since 2×51295449² = 5262446176223202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51295429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139969 + ... + 140334.

It is an arithmetic number, because the mean of its divisors is an integer number (8689424).

Almost surely, 2^51295449 is an apocalyptic number.

It is an amenable number.

51295449 is a deficient number, since it is larger than the sum of its proper divisors (18219943).

51295449 is a wasteful number, since it uses less digits than its factorization.

51295449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280367.

The product of its digits is 64800, while the sum is 39.

The square root of 51295449 is about 7162.0841240522. The cubic root of 51295449 is about 371.5577108503.

The spelling of 51295449 in words is "fifty-one million, two hundred ninety-five thousand, four hundred forty-nine".