47640951 has 6 divisors (see below), whose sum is σ = 68814720. Its totient is φ = 31760628.

The previous prime is 47640949. The next prime is 47640977. The reversal of 47640951 is 15904674.

47640951 is a `hidden beast` number, since 4 + 7 + 640 + 9 + 5 + 1 = 666.

It is not a de Polignac number, because 47640951 - 2¹ = 47640949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47640991) 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 5 ways as a sum of consecutive naturals, for example, 2646711 + ... + 2646728.

It is an arithmetic number, because the mean of its divisors is an integer number (11469120).

Almost surely, 2^47640951 is an apocalyptic number.

47640951 is a deficient number, since it is larger than the sum of its proper divisors (21173769).

47640951 is a wasteful number, since it uses less digits than its factorization.

47640951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5293445 (or 5293442 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 47640951 is about 6902.2424616932. The cubic root of 47640951 is about 362.5156895310.

The spelling of 47640951 in words is "forty-seven million, six hundred forty thousand, nine hundred fifty-one".