61263217 has 4 divisors (see below), whose sum is σ = 61553776. Its totient is φ = 60972660.

The previous prime is 61263211. The next prime is 61263269. The reversal of 61263217 is 71236216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61263217 - 2¹¹ = 61261169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61263211) 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, 144963 + ... + 145384.

It is an arithmetic number, because the mean of its divisors is an integer number (15388444).

Almost surely, 2^61263217 is an apocalyptic number.

It is an amenable number.

61263217 is a deficient number, since it is larger than the sum of its proper divisors (290559).

61263217 is a wasteful number, since it uses less digits than its factorization.

61263217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290558.

The product of its digits is 3024, while the sum is 28.

The square root of 61263217 is about 7827.0822788572. The cubic root of 61263217 is about 394.2151096746.

The spelling of 61263217 in words is "sixty-one million, two hundred sixty-three thousand, two hundred seventeen".