51448621 has 8 divisors (see below), whose sum is σ = 58847040. Its totient is φ = 44062368.

The previous prime is 51448619. The next prime is 51448633. The reversal of 51448621 is 12684415.

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

It is not a de Polignac number, because 51448621 - 2¹ = 51448619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51448601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9465 + ... + 13873.

It is an arithmetic number, because the mean of its divisors is an integer number (7355880).

Almost surely, 2^51448621 is an apocalyptic number.

It is an amenable number.

51448621 is a deficient number, since it is larger than the sum of its proper divisors (7398419).

51448621 is a wasteful number, since it uses less digits than its factorization.

51448621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6083.

The product of its digits is 7680, while the sum is 31.

The square root of 51448621 is about 7172.7694093704. The cubic root of 51448621 is about 371.9271762677.

The spelling of 51448621 in words is "fifty-one million, four hundred forty-eight thousand, six hundred twenty-one".