61247453 has 4 divisors (see below), whose sum is σ = 61266108. Its totient is φ = 61228800.

The previous prime is 61247429. The next prime is 61247467. The reversal of 61247453 is 35474216.

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 39967684 + 21279769 = 6322^2 + 4613^2 .

It is a cyclic number.

It is not a de Polignac number, because 61247453 - 2¹⁶ = 61181917 is a prime.

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 (61247423) 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, 2948 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (15316527).

Almost surely, 2^61247453 is an apocalyptic number.

It is an amenable number.

61247453 is a deficient number, since it is larger than the sum of its proper divisors (18655).

61247453 is a wasteful number, since it uses less digits than its factorization.

61247453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18654.

The product of its digits is 20160, while the sum is 32.

The square root of 61247453 is about 7826.0751976965. The cubic root of 61247453 is about 394.1812941684.

The spelling of 61247453 in words is "sixty-one million, two hundred forty-seven thousand, four hundred fifty-three".