49801123 has 2 divisors, whose sum is σ = 49801124. Its totient is φ = 49801122.

The previous prime is 49801121. The next prime is 49801139. The reversal of 49801123 is 32110894.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49801123 - 2¹ = 49801121 is a prime.

It is a super-2 number, since 2×49801123² = 4960303704122258, which contains 22 as substring.

Together with 49801121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 49801091 and 49801100.

It is not a weakly prime, because it can be changed into another prime (49801121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24900561 + 24900562.

It is an arithmetic number, because the mean of its divisors is an integer number (24900562).

Almost surely, 2^49801123 is an apocalyptic number.

49801123 is a deficient number, since it is larger than the sum of its proper divisors (1).

49801123 is an equidigital number, since it uses as much as digits as its factorization.

49801123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 49801123 is about 7056.9910726881. The cubic root of 49801123 is about 367.9140547363.

The spelling of 49801123 in words is "forty-nine million, eight hundred one thousand, one hundred twenty-three".