49531147 has 2 divisors, whose sum is σ = 49531148. Its totient is φ = 49531146.

The previous prime is 49531129. The next prime is 49531187. The reversal of 49531147 is 74113594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49531147 - 2⁷ = 49531019 is a prime.

It is not a weakly prime, because it can be changed into another prime (49531187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24765573 + 24765574.

It is an arithmetic number, because the mean of its divisors is an integer number (24765574).

Almost surely, 2^49531147 is an apocalyptic number.

49531147 is a deficient number, since it is larger than the sum of its proper divisors (1).

49531147 is an equidigital number, since it uses as much as digits as its factorization.

49531147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 49531147 is about 7037.8368125440. The cubic root of 49531147 is about 367.2480189140.

The spelling of 49531147 in words is "forty-nine million, five hundred thirty-one thousand, one hundred forty-seven".