49860781 has 4 divisors (see below), whose sum is σ = 49983100. Its totient is φ = 49738464.

The previous prime is 49860703. The next prime is 49860809. The reversal of 49860781 is 18706894.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36421225 + 13439556 = 6035^2 + 3666^2 .

It is a cyclic number.

It is not a de Polignac number, because 49860781 - 2²¹ = 47763629 is a prime.

It is a super-2 number, since 2×49860781² = 4972194963859922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49864781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60546 + ... + 61363.

It is an arithmetic number, because the mean of its divisors is an integer number (12495775).

Almost surely, 2^49860781 is an apocalyptic number.

It is an amenable number.

49860781 is a deficient number, since it is larger than the sum of its proper divisors (122319).

49860781 is a wasteful number, since it uses less digits than its factorization.

49860781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122318.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 49860781 is about 7061.2166798647. The cubic root of 49860781 is about 368.0609072352.

The spelling of 49860781 in words is "forty-nine million, eight hundred sixty thousand, seven hundred eighty-one".