61330249 has 8 divisors (see below), whose sum is σ = 61911360. Its totient is φ = 60752016.

The previous prime is 61330231. The next prime is 61330261. The reversal of 61330249 is 94203316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61330249 - 2¹³ = 61322057 is a prime.

It is a super-2 number, since 2×61330249² = 7522798884804002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61330229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73567 + ... + 74395.

It is an arithmetic number, because the mean of its divisors is an integer number (7738920).

Almost surely, 2^61330249 is an apocalyptic number.

It is an amenable number.

61330249 is a deficient number, since it is larger than the sum of its proper divisors (581111).

61330249 is a wasteful number, since it uses less digits than its factorization.

61330249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 61330249 is about 7831.3631635878. The cubic root of 61330249 is about 394.3588359137.

The spelling of 61330249 in words is "sixty-one million, three hundred thirty thousand, two hundred forty-nine".