49851881 has 2 divisors, whose sum is σ = 49851882. Its totient is φ = 49851880.

The previous prime is 49851811. The next prime is 49851931. The reversal of 49851881 is 18815894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 8281 = 7060^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 49851881 - 2¹⁴ = 49835497 is a prime.

It is a super-2 number, since 2×49851881² = 4970420078476322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49851811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24925940 + 24925941.

It is an arithmetic number, because the mean of its divisors is an integer number (24925941).

Almost surely, 2^49851881 is an apocalyptic number.

It is an amenable number.

49851881 is a deficient number, since it is larger than the sum of its proper divisors (1).

49851881 is an equidigital number, since it uses as much as digits as its factorization.

49851881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 44.

The square root of 49851881 is about 7060.5864487307. The cubic root of 49851881 is about 368.0390066758.

The spelling of 49851881 in words is "forty-nine million, eight hundred fifty-one thousand, eight hundred eighty-one".