61823449 has 4 divisors (see below), whose sum is σ = 63331380. Its totient is φ = 60315520.

The previous prime is 61823431. The next prime is 61823459. The reversal of 61823449 is 94432816.

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 22848400 + 38975049 = 4780^2 + 6243^2 .

It is a cyclic number.

It is not a de Polignac number, because 61823449 - 2¹⁷ = 61692377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61823459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753904 + ... + 753985.

It is an arithmetic number, because the mean of its divisors is an integer number (15832845).

Almost surely, 2^61823449 is an apocalyptic number.

It is an amenable number.

61823449 is a deficient number, since it is larger than the sum of its proper divisors (1507931).

61823449 is a wasteful number, since it uses less digits than its factorization.

61823449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507930.

The product of its digits is 41472, while the sum is 37.

The square root of 61823449 is about 7862.7888818154. The cubic root of 61823449 is about 395.4131211593.

The spelling of 61823449 in words is "sixty-one million, eight hundred twenty-three thousand, four hundred forty-nine".