61254947 has 4 divisors (see below), whose sum is σ = 65966880. Its totient is φ = 56543016.

The previous prime is 61254929. The next prime is 61254997. The reversal of 61254947 is 74945216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61254947 - 2⁶ = 61254883 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61254947.

It is not an unprimeable number, because it can be changed into a prime (61254997) 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, 2355947 + ... + 2355972.

It is an arithmetic number, because the mean of its divisors is an integer number (16491720).

Almost surely, 2^61254947 is an apocalyptic number.

61254947 is a deficient number, since it is larger than the sum of its proper divisors (4711933).

61254947 is a wasteful number, since it uses less digits than its factorization.

61254947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711932.

The product of its digits is 60480, while the sum is 38.

The square root of 61254947 is about 7826.5539671046. The cubic root of 61254947 is about 394.1973703424.

The spelling of 61254947 in words is "sixty-one million, two hundred fifty-four thousand, nine hundred forty-seven".