35521020 has 36 divisors (see below), whose sum is σ = 107747640. Its totient is φ = 9472224.

The previous prime is 35520983. The next prime is 35521021. The reversal of 35521020 is 2012553.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 35520984 and 35521002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35521021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98490 + ... + 98849.

It is an arithmetic number, because the mean of its divisors is an integer number (2992990).

Almost surely, 2^35521020 is an apocalyptic number.

35521020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

35521020 is an abundant number, since it is smaller than the sum of its proper divisors (72226620).

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

35521020 is a wasteful number, since it uses less digits than its factorization.

35521020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197354 (or 197349 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 35521020 is about 5959.9513420833. The cubic root of 35521020 is about 328.7217770834.

Adding to 35521020 its reverse (2012553), we get a palindrome (37533573).

The spelling of 35521020 in words is "thirty-five million, five hundred twenty-one thousand, twenty".