47987051 has 4 divisors (see below), whose sum is σ = 54842352. Its totient is φ = 41131752.

The previous prime is 47987041. The next prime is 47987057. The reversal of 47987051 is 15078974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15078974 = 2 ⋅7539487.

It is a cyclic number.

It is not a de Polignac number, because 47987051 - 2¹⁴ = 47970667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47987057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3427640 + ... + 3427653.

It is an arithmetic number, because the mean of its divisors is an integer number (13710588).

Almost surely, 2^47987051 is an apocalyptic number.

47987051 is a deficient number, since it is larger than the sum of its proper divisors (6855301).

47987051 is an equidigital number, since it uses as much as digits as its factorization.

47987051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6855300.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 47987051 is about 6927.2686536614. The cubic root of 47987051 is about 363.3914352181.

The spelling of 47987051 in words is "forty-seven million, nine hundred eighty-seven thousand, fifty-one".