49166981 has 2 divisors, whose sum is σ = 49166982. Its totient is φ = 49166980.

The previous prime is 49166963. The next prime is 49166983. The reversal of 49166981 is 18966194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35224225 + 13942756 = 5935^2 + 3734^2 .

It is a cyclic number.

It is not a de Polignac number, because 49166981 - 2⁶ = 49166917 is a prime.

It is a super-2 number, since 2×49166981² = 4834784041308722, which contains 22 as substring.

Together with 49166983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49166983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24583490 + 24583491.

It is an arithmetic number, because the mean of its divisors is an integer number (24583491).

Almost surely, 2^49166981 is an apocalyptic number.

It is an amenable number.

49166981 is a deficient number, since it is larger than the sum of its proper divisors (1).

49166981 is an equidigital number, since it uses as much as digits as its factorization.

49166981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 49166981 is about 7011.9170702455. The cubic root of 49166981 is about 366.3457694706.

The spelling of 49166981 in words is "forty-nine million, one hundred sixty-six thousand, nine hundred eighty-one".