61138202 has 4 divisors (see below), whose sum is σ = 91707306. Its totient is φ = 30569100.

The previous prime is 61138193. The next prime is 61138241. The reversal of 61138202 is 20283116.

61138202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 49434961 + 11703241 = 7031^2 + 3421^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15284549 + ... + 15284552.

Almost surely, 2^61138202 is an apocalyptic number.

61138202 is a deficient number, since it is larger than the sum of its proper divisors (30569104).

61138202 is a wasteful number, since it uses less digits than its factorization.

61138202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30569103.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 61138202 is about 7819.0921467904. The cubic root of 61138202 is about 393.9467792097.

The spelling of 61138202 in words is "sixty-one million, one hundred thirty-eight thousand, two hundred two".