51448907 has 8 divisors (see below), whose sum is σ = 55137696. Its totient is φ = 47881152.

The previous prime is 51448889. The next prime is 51448909. The reversal of 51448907 is 70984415.

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

It is a cyclic number.

It is not a de Polignac number, because 51448907 - 2⁸ = 51448651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51448909) 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, 29378 + ... + 31079.

It is an arithmetic number, because the mean of its divisors is an integer number (6892212).

Almost surely, 2^51448907 is an apocalyptic number.

51448907 is a deficient number, since it is larger than the sum of its proper divisors (3688789).

51448907 is a wasteful number, since it uses less digits than its factorization.

51448907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60517.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 51448907 is about 7172.7893458542. The cubic root of 51448907 is about 371.9278654406.

The spelling of 51448907 in words is "fifty-one million, four hundred forty-eight thousand, nine hundred seven".