1000201520 has 40 divisors (see below), whose sum is σ = 2327961120. Its totient is φ = 399651840.

The previous prime is 1000201507. The next prime is 1000201537. The reversal of 1000201520 is 251020001.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1000201520² = 2000806161220620800, which contains 22 as substring.

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, 74525 + ... + 86915.

It is an arithmetic number, because the mean of its divisors is an integer number (58199028).

Almost surely, 2^1000201520 is an apocalyptic number.

1000201520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000201520 is an abundant number, since it is smaller than the sum of its proper divisors (1327759600).

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

1000201520 is a wasteful number, since it uses less digits than its factorization.

1000201520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13413 (or 13407 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1000201520 is about 31625.9627521440. The cubic root of 1000201520 is about 1000.0671688216.

Adding to 1000201520 its reverse (251020001), we get a palindrome (1251221521).

The spelling of 1000201520 in words is "one billion, two hundred one thousand, five hundred twenty".