47406551 has 4 divisors (see below), whose sum is σ = 47826192. Its totient is φ = 46986912.

The previous prime is 47406517. The next prime is 47406553. The reversal of 47406551 is 15560474.

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

It is a cyclic number.

It is not a de Polignac number, because 47406551 - 2¹⁸ = 47144407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47406553) 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 3 ways as a sum of consecutive naturals, for example, 209651 + ... + 209876.

It is an arithmetic number, because the mean of its divisors is an integer number (11956548).

Almost surely, 2^47406551 is an apocalyptic number.

47406551 is a deficient number, since it is larger than the sum of its proper divisors (419641).

47406551 is a wasteful number, since it uses less digits than its factorization.

47406551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419640.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 47406551 is about 6885.2415353421. The cubic root of 47406551 is about 361.9201695093.

The spelling of 47406551 in words is "forty-seven million, four hundred six thousand, five hundred fifty-one".