47951845 has 4 divisors (see below), whose sum is σ = 57542220. Its totient is φ = 38361472.

The previous prime is 47951821. The next prime is 47951851. The reversal of 47951845 is 54815974.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23833924 + 24117921 = 4882^2 + 4911^2 .

It is a cyclic number.

It is not a de Polignac number, because 47951845 - 2⁹ = 47951333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4795180 + ... + 4795189.

It is an arithmetic number, because the mean of its divisors is an integer number (14385555).

Almost surely, 2^47951845 is an apocalyptic number.

It is an amenable number.

47951845 is a deficient number, since it is larger than the sum of its proper divisors (9590375).

47951845 is an equidigital number, since it uses as much as digits as its factorization.

47951845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9590374.

The product of its digits is 201600, while the sum is 43.

The square root of 47951845 is about 6924.7270704339. The cubic root of 47951845 is about 363.3025453436.

The spelling of 47951845 in words is "forty-seven million, nine hundred fifty-one thousand, eight hundred forty-five".