49581377 has 2 divisors, whose sum is σ = 49581378. Its totient is φ = 49581376.

The previous prime is 49581373. The next prime is 49581379. The reversal of 49581377 is 77318594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49547521 + 33856 = 7039^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 49581377 - 2² = 49581373 is a prime.

It is a super-2 number, since 2×49581377² = 4916625890432258, which contains 22 as substring.

Together with 49581379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49581373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24790688 + 24790689.

It is an arithmetic number, because the mean of its divisors is an integer number (24790689).

Almost surely, 2^49581377 is an apocalyptic number.

It is an amenable number.

49581377 is a deficient number, since it is larger than the sum of its proper divisors (1).

49581377 is an equidigital number, since it uses as much as digits as its factorization.

49581377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 49581377 is about 7041.4044763811. The cubic root of 49581377 is about 367.3721201910.

The spelling of 49581377 in words is "forty-nine million, five hundred eighty-one thousand, three hundred seventy-seven".