61471653 has 4 divisors (see below), whose sum is σ = 81962208. Its totient is φ = 40981100.

The previous prime is 61471637. The next prime is 61471673. The reversal of 61471653 is 35617416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61471653 - 2⁴ = 61471637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61471633) 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, 10245273 + ... + 10245278.

It is an arithmetic number, because the mean of its divisors is an integer number (20490552).

Almost surely, 2^61471653 is an apocalyptic number.

It is an amenable number.

61471653 is a deficient number, since it is larger than the sum of its proper divisors (20490555).

61471653 is a wasteful number, since it uses less digits than its factorization.

61471653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20490554.

The product of its digits is 15120, while the sum is 33.

The square root of 61471653 is about 7840.3860236598. The cubic root of 61471653 is about 394.6616832896.

The spelling of 61471653 in words is "sixty-one million, four hundred seventy-one thousand, six hundred fifty-three".