41521720 has 16 divisors (see below), whose sum is σ = 93423960. Its totient is φ = 16608672.

The previous prime is 41521699. The next prime is 41521721. The reversal of 41521720 is 2712514.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 41521691 and 41521700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41521721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518982 + ... + 519061.

Almost surely, 2^41521720 is an apocalyptic number.

41521720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41521720 is an abundant number, since it is smaller than the sum of its proper divisors (51902240).

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

41521720 is a wasteful number, since it uses less digits than its factorization.

41521720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038054 (or 1038050 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 41521720 is about 6443.7349417865. The cubic root of 41521720 is about 346.2781684999.

The spelling of 41521720 in words is "forty-one million, five hundred twenty-one thousand, seven hundred twenty".