49861261 has 2 divisors, whose sum is σ = 49861262. Its totient is φ = 49861260.

The previous prime is 49861243. The next prime is 49861277. The reversal of 49861261 is 16216894.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48038761 + 1822500 = 6931^2 + 1350^2 .

It is a cyclic number.

It is not a de Polignac number, because 49861261 - 2²¹ = 47764109 is a prime.

It is a super-2 number, since 2×49861261² = 4972290697020242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49861261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49861061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24930630 + 24930631.

It is an arithmetic number, because the mean of its divisors is an integer number (24930631).

Almost surely, 2^49861261 is an apocalyptic number.

It is an amenable number.

49861261 is a deficient number, since it is larger than the sum of its proper divisors (1).

49861261 is an equidigital number, since it uses as much as digits as its factorization.

49861261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 49861261 is about 7061.2506682598. The cubic root of 49861261 is about 368.0620883149.

The spelling of 49861261 in words is "forty-nine million, eight hundred sixty-one thousand, two hundred sixty-one".