61009245 has 48 divisors (see below), whose sum is σ = 117374400. Its totient is φ = 29064960.

The previous prime is 61009241. The next prime is 61009253. The reversal of 61009245 is 54290016.

61009245 is a `hidden beast` number, since 610 + 0 + 9 + 2 + 45 = 666.

It is not a de Polignac number, because 61009245 - 2² = 61009241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61009241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28161 + ... + 30249.

It is an arithmetic number, because the mean of its divisors is an integer number (2445300).

Almost surely, 2^61009245 is an apocalyptic number.

It is an amenable number.

61009245 is a deficient number, since it is larger than the sum of its proper divisors (56365155).

61009245 is a wasteful number, since it uses less digits than its factorization.

61009245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61009245 is about 7810.8415039610. The cubic root of 61009245 is about 393.6696041452.

The spelling of 61009245 in words is "sixty-one million, nine thousand, two hundred forty-five".