61572471 has 8 divisors (see below), whose sum is σ = 83086080. Its totient is φ = 40553592.

The previous prime is 61572443. The next prime is 61572503. The reversal of 61572471 is 17427516.

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

It is not a de Polignac number, because 61572471 - 2¹⁴ = 61556087 is a prime.

It is a super-3 number, since 3×61572471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61572271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123391 + ... + 123888.

It is an arithmetic number, because the mean of its divisors is an integer number (10385760).

Almost surely, 2^61572471 is an apocalyptic number.

61572471 is a deficient number, since it is larger than the sum of its proper divisors (21513609).

61572471 is a wasteful number, since it uses less digits than its factorization.

61572471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247365.

The product of its digits is 11760, while the sum is 33.

The square root of 61572471 is about 7846.8127924655. The cubic root of 61572471 is about 394.8773234378.

Adding to 61572471 its reverse (17427516), we get a palindrome (78999987).

The spelling of 61572471 in words is "sixty-one million, five hundred seventy-two thousand, four hundred seventy-one".