61253213 has 8 divisors (see below), whose sum is σ = 71324928. Its totient is φ = 51511824.

The previous prime is 61253201. The next prime is 61253219. The reversal of 61253213 is 31235216.

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

It is a de Polignac number, because none of the positive numbers 2^k-61253213 is a prime.

It is a super-2 number, since 2×61253213² = 7503912205646738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61253219) 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, 82181 + ... + 82922.

It is an arithmetic number, because the mean of its divisors is an integer number (8915616).

Almost surely, 2^61253213 is an apocalyptic number.

It is an amenable number.

61253213 is a deficient number, since it is larger than the sum of its proper divisors (10071715).

61253213 is a wasteful number, since it uses less digits than its factorization.

61253213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165163.

The product of its digits is 1080, while the sum is 23.

The square root of 61253213 is about 7826.4431895977. The cubic root of 61253213 is about 394.1936506718.

Adding to 61253213 its reverse (31235216), we get a palindrome (92488429).

The spelling of 61253213 in words is "sixty-one million, two hundred fifty-three thousand, two hundred thirteen".