61049988 has 36 divisors (see below), whose sum is σ = 159644940. Its totient is φ = 19647936.

The previous prime is 61049929. The next prime is 61049999. The reversal of 61049988 is 88994016.

It can be written as a sum of positive squares in 2 ways, for example, as 39538944 + 21511044 = 6288^2 + 4638^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28195 + ... + 30282.

Almost surely, 2^61049988 is an apocalyptic number.

It is an amenable number.

61049988 is an abundant number, since it is smaller than the sum of its proper divisors (98594952).

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

61049988 is a wasteful number, since it uses less digits than its factorization.

61049988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58516 (or 58511 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 61049988 is about 7813.4491743404. The cubic root of 61049988 is about 393.7572177059.

The spelling of 61049988 in words is "sixty-one million, forty-nine thousand, nine hundred eighty-eight".