49061791 has 2 divisors, whose sum is σ = 49061792. Its totient is φ = 49061790.

The previous prime is 49061777. The next prime is 49061821. The reversal of 49061791 is 19716094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49061791 - 2²³ = 40673183 is a prime.

It is a super-2 number, since 2×49061791² = 4814118672255362, which contains 22 as substring.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 49061791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49061191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24530895 + 24530896.

It is an arithmetic number, because the mean of its divisors is an integer number (24530896).

Almost surely, 2^49061791 is an apocalyptic number.

49061791 is a deficient number, since it is larger than the sum of its proper divisors (1).

49061791 is an equidigital number, since it uses as much as digits as its factorization.

49061791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 49061791 is about 7004.4122522878. The cubic root of 49061791 is about 366.0843241860.

The spelling of 49061791 in words is "forty-nine million, sixty-one thousand, seven hundred ninety-one".