61471559 has 4 divisors (see below), whose sum is σ = 62249760. Its totient is φ = 60693360.

The previous prime is 61471549. The next prime is 61471567. The reversal of 61471559 is 95517416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61471559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61471549) 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, 388982 + ... + 389139.

It is an arithmetic number, because the mean of its divisors is an integer number (15562440).

Almost surely, 2^61471559 is an apocalyptic number.

61471559 is a deficient number, since it is larger than the sum of its proper divisors (778201).

61471559 is an equidigital number, since it uses as much as digits as its factorization.

61471559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778200.

The product of its digits is 37800, while the sum is 38.

The square root of 61471559 is about 7840.3800290547. The cubic root of 61471559 is about 394.6614821225.

The spelling of 61471559 in words is "sixty-one million, four hundred seventy-one thousand, five hundred fifty-nine".