47540851 has 2 divisors, whose sum is σ = 47540852. Its totient is φ = 47540850.

The previous prime is 47540827. The next prime is 47540861. The reversal of 47540851 is 15804574.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47540851 is a prime.

It is not a weakly prime, because it can be changed into another prime (47540821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23770425 + 23770426.

It is an arithmetic number, because the mean of its divisors is an integer number (23770426).

Almost surely, 2^47540851 is an apocalyptic number.

47540851 is a deficient number, since it is larger than the sum of its proper divisors (1).

47540851 is an equidigital number, since it uses as much as digits as its factorization.

47540851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 47540851 is about 6894.9873821494. The cubic root of 47540851 is about 362.2616135407.

The spelling of 47540851 in words is "forty-seven million, five hundred forty thousand, eight hundred fifty-one".