47319551 has 4 divisors (see below), whose sum is σ = 50103072. Its totient is φ = 44536032.

The previous prime is 47319523. The next prime is 47319563. The reversal of 47319551 is 15591374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15591374 = 2 ⋅7795687.

It is a cyclic number.

It is not a de Polignac number, because 47319551 - 2¹⁸ = 47057407 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 (47319451) 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, 1391735 + ... + 1391768.

It is an arithmetic number, because the mean of its divisors is an integer number (12525768).

Almost surely, 2^47319551 is an apocalyptic number.

47319551 is a deficient number, since it is larger than the sum of its proper divisors (2783521).

47319551 is a wasteful number, since it uses less digits than its factorization.

47319551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783520.

The product of its digits is 18900, while the sum is 35.

The square root of 47319551 is about 6878.9207729120. The cubic root of 47319551 is about 361.6986365825.

The spelling of 47319551 in words is "forty-seven million, three hundred nineteen thousand, five hundred fifty-one".