61029245 has 4 divisors (see below), whose sum is σ = 73235100. Its totient is φ = 48823392.

The previous prime is 61029229. The next prime is 61029247. The reversal of 61029245 is 54292016.

It is a happy number.

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 26759929 + 34269316 = 5173^2 + 5854^2 .

It is a cyclic number.

It is not a de Polignac number, because 61029245 - 2⁴ = 61029229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61029247) 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, 6102920 + ... + 6102929.

It is an arithmetic number, because the mean of its divisors is an integer number (18308775).

Almost surely, 2^61029245 is an apocalyptic number.

It is an amenable number.

61029245 is a deficient number, since it is larger than the sum of its proper divisors (12205855).

61029245 is a wasteful number, since it uses less digits than its factorization.

61029245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12205854.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 61029245 is about 7812.1216708395. The cubic root of 61029245 is about 393.7126169263.

The spelling of 61029245 in words is "sixty-one million, twenty-nine thousand, two hundred forty-five".