61807542 has 8 divisors (see below), whose sum is σ = 123615096. Its totient is φ = 20602512.

The previous prime is 61807531. The next prime is 61807547. The reversal of 61807542 is 24570816.

It is a sphenic number, since it is the product of 3 distinct primes.

61807542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61807547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5150623 + ... + 5150634.

It is an arithmetic number, because the mean of its divisors is an integer number (15451887).

Almost surely, 2^61807542 is an apocalyptic number.

61807542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61807542 is a wasteful number, since it uses less digits than its factorization.

61807542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10301262.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 61807542 is about 7861.7772799794. Note that the first 3 decimals coincide. The cubic root of 61807542 is about 395.3792053547.

The spelling of 61807542 in words is "sixty-one million, eight hundred seven thousand, five hundred forty-two".