51450651 has 48 divisors (see below), whose sum is σ = 91203840. Its totient is φ = 27293760.

The previous prime is 51450649. The next prime is 51450667. The reversal of 51450651 is 15605415.

It is a happy number.

51450651 is a `hidden beast` number, since 5 + 1 + 4 + 5 + 0 + 651 = 666.

It is not a de Polignac number, because 51450651 - 2¹ = 51450649 is a prime.

It is a super-3 number, since 3×51450651³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51450601) 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 47 ways as a sum of consecutive naturals, for example, 63036 + ... + 63846.

It is an arithmetic number, because the mean of its divisors is an integer number (1900080).

Almost surely, 2^51450651 is an apocalyptic number.

51450651 is a deficient number, since it is larger than the sum of its proper divisors (39753189).

51450651 is a wasteful number, since it uses less digits than its factorization.

51450651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51450651 is about 7172.9109153816. The cubic root of 51450651 is about 371.9320678938.

The spelling of 51450651 in words is "fifty-one million, four hundred fifty thousand, six hundred fifty-one".