61291146 has 32 divisors (see below), whose sum is σ = 143515008. Its totient is φ = 17084160.

The previous prime is 61291141. The next prime is 61291151. The reversal of 61291146 is 64119216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61291141) and next prime (61291151).

It is not an unprimeable number, because it can be changed into a prime (61291141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16075 + ... + 19518.

It is an arithmetic number, because the mean of its divisors is an integer number (4484844).

Almost surely, 2^61291146 is an apocalyptic number.

61291146 is an abundant number, since it is smaller than the sum of its proper divisors (82223862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61291146 is a wasteful number, since it uses less digits than its factorization.

61291146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35646.

The product of its digits is 2592, while the sum is 30.

The square root of 61291146 is about 7828.8662014368. The cubic root of 61291146 is about 394.2750061979.

The spelling of 61291146 in words is "sixty-one million, two hundred ninety-one thousand, one hundred forty-six".