49278547 has 2 divisors, whose sum is σ = 49278548. Its totient is φ = 49278546.

The previous prime is 49278539. The next prime is 49278553. The reversal of 49278547 is 74587294.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49278547 - 2³ = 49278539 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 49278497 and 49278506.

It is not a weakly prime, because it can be changed into another prime (49278587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24639273 + 24639274.

It is an arithmetic number, because the mean of its divisors is an integer number (24639274).

Almost surely, 2^49278547 is an apocalyptic number.

49278547 is a deficient number, since it is larger than the sum of its proper divisors (1).

49278547 is an equidigital number, since it uses as much as digits as its factorization.

49278547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 46.

The square root of 49278547 is about 7019.8680187023. The cubic root of 49278547 is about 366.6226548643.

The spelling of 49278547 in words is "forty-nine million, two hundred seventy-eight thousand, five hundred forty-seven".