49891031 has 2 divisors, whose sum is σ = 49891032. Its totient is φ = 49891030.

The previous prime is 49891027. The next prime is 49891043. The reversal of 49891031 is 13019894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49891031 - 2² = 49891027 is a prime.

It is a super-2 number, since 2×49891031² = 4978229948485922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 49890982 and 49891000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49890031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24945515 + 24945516.

It is an arithmetic number, because the mean of its divisors is an integer number (24945516).

Almost surely, 2^49891031 is an apocalyptic number.

49891031 is a deficient number, since it is larger than the sum of its proper divisors (1).

49891031 is an equidigital number, since it uses as much as digits as its factorization.

49891031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 49891031 is about 7063.3583372217. The cubic root of 49891031 is about 368.1353250534.

The spelling of 49891031 in words is "forty-nine million, eight hundred ninety-one thousand, thirty-one".