61492005 has 24 divisors (see below), whose sum is σ = 109189080. Its totient is φ = 31994880.

The previous prime is 61491973. The next prime is 61492051. The reversal of 61492005 is 50029416.

61492005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 60233121 = 1122^2 + 7761^2 .

It is not a de Polignac number, because 61492005 - 2⁵ = 61491973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61492005.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 14820 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (4549545).

Almost surely, 2^61492005 is an apocalyptic number.

It is an amenable number.

61492005 is a deficient number, since it is larger than the sum of its proper divisors (47697075).

61492005 is a wasteful number, since it uses less digits than its factorization.

61492005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33381 (or 33378 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61492005 is about 7841.6838115293. The cubic root of 61492005 is about 394.7052332725.

The spelling of 61492005 in words is "sixty-one million, four hundred ninety-two thousand, five".