71545460 has 24 divisors (see below), whose sum is σ = 171709440. Its totient is φ = 24529824.

The previous prime is 71545447. The next prime is 71545511. The reversal of 71545460 is 6454517.

It is a super-2 number, since 2×71545460² = 10237505693223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255380 + ... + 255659.

It is an arithmetic number, because the mean of its divisors is an integer number (7154560).

Almost surely, 2^71545460 is an apocalyptic number.

71545460 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71545460 is an abundant number, since it is smaller than the sum of its proper divisors (100163980).

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

71545460 is a wasteful number, since it uses less digits than its factorization.

71545460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511055 (or 511053 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 71545460 is about 8458.4549416545. The cubic root of 71545460 is about 415.1394702272.

Adding to 71545460 its reverse (6454517), we get a palindrome (77999977).

The spelling of 71545460 in words is "seventy-one million, five hundred forty-five thousand, four hundred sixty".