49640231 has 2 divisors, whose sum is σ = 49640232. Its totient is φ = 49640230.

The previous prime is 49640209. The next prime is 49640251. The reversal of 49640231 is 13204694.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49640231 - 2⁶ = 49640167 is a prime.

It is a super-2 number, since 2×49640231² = 4928305067466722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49640194 and 49640203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49640251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24820115 + 24820116.

It is an arithmetic number, because the mean of its divisors is an integer number (24820116).

Almost surely, 2^49640231 is an apocalyptic number.

49640231 is a deficient number, since it is larger than the sum of its proper divisors (1).

49640231 is an equidigital number, since it uses as much as digits as its factorization.

49640231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 49640231 is about 7045.5823747934. The cubic root of 49640231 is about 367.5174218529.

The spelling of 49640231 in words is "forty-nine million, six hundred forty thousand, two hundred thirty-one".