61495249 has 4 divisors (see below), whose sum is σ = 61523380. Its totient is φ = 61467120.

The previous prime is 61495243. The next prime is 61495253. The reversal of 61495249 is 94259416.

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 28547649 + 32947600 = 5343^2 + 5740^2 .

It is a cyclic number.

It is not a de Polignac number, because 61495249 - 2³ = 61495241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61495241) 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, 10482 + ... + 15259.

It is an arithmetic number, because the mean of its divisors is an integer number (15380845).

Almost surely, 2^61495249 is an apocalyptic number.

It is an amenable number.

61495249 is a deficient number, since it is larger than the sum of its proper divisors (28131).

61495249 is a wasteful number, since it uses less digits than its factorization.

61495249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28130.

The product of its digits is 77760, while the sum is 40.

The square root of 61495249 is about 7841.8906521323. The cubic root of 61495249 is about 394.7121740190.

The spelling of 61495249 in words is "sixty-one million, four hundred ninety-five thousand, two hundred forty-nine".