47772547 has 2 divisors, whose sum is σ = 47772548. Its totient is φ = 47772546.

The previous prime is 47772497. The next prime is 47772553. The reversal of 47772547 is 74527774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47772547 - 2¹⁹ = 47248259 is a prime.

It is not a weakly prime, because it can be changed into another prime (47712547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23886273 + 23886274.

It is an arithmetic number, because the mean of its divisors is an integer number (23886274).

Almost surely, 2^47772547 is an apocalyptic number.

47772547 is a deficient number, since it is larger than the sum of its proper divisors (1).

47772547 is an equidigital number, since it uses as much as digits as its factorization.

47772547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384160, while the sum is 43.

The square root of 47772547 is about 6911.7687316634. The cubic root of 47772547 is about 362.8491684400.

The spelling of 47772547 in words is "forty-seven million, seven hundred seventy-two thousand, five hundred forty-seven".