61772049 has 6 divisors (see below), whose sum is σ = 89226306. Its totient is φ = 41181360.

The previous prime is 61772047. The next prime is 61772093. The reversal of 61772049 is 94027716.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 27373824 = 5865^2 + 5232^2 .

It is not a de Polignac number, because 61772049 - 2¹ = 61772047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61772047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3431772 + ... + 3431789.

It is an arithmetic number, because the mean of its divisors is an integer number (14871051).

Almost surely, 2^61772049 is an apocalyptic number.

It is an amenable number.

61772049 is a deficient number, since it is larger than the sum of its proper divisors (27454257).

61772049 is a wasteful number, since it uses less digits than its factorization.

61772049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863567 (or 6863564 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 61772049 is about 7859.5196418102. The cubic root of 61772049 is about 395.3035086531.

The spelling of 61772049 in words is "sixty-one million, seven hundred seventy-two thousand, forty-nine".