47139651 has 40 divisors (see below), whose sum is σ = 76839840. Its totient is φ = 28626048.

The previous prime is 47139647. The next prime is 47139661. The reversal of 47139651 is 15693174.

It is not a de Polignac number, because 47139651 - 2² = 47139647 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (47139611) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 93466 + ... + 93968.

It is an arithmetic number, because the mean of its divisors is an integer number (1920996).

Almost surely, 2^47139651 is an apocalyptic number.

47139651 is a deficient number, since it is larger than the sum of its proper divisors (29700189).

47139651 is a wasteful number, since it uses less digits than its factorization.

47139651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 608 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 47139651 is about 6865.8321418456. The cubic root of 47139651 is about 361.2396844953.

The spelling of 47139651 in words is "forty-seven million, one hundred thirty-nine thousand, six hundred fifty-one".