1011521532 has 24 divisors (see below), whose sum is σ = 2697390976. Its totient is φ = 289006128.

The previous prime is 1011521527. The next prime is 1011521543. The reversal of 1011521532 is 2351251101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1011521499 and 1011521508.

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, 6020878 + ... + 6021045.

Almost surely, 2^1011521532 is an apocalyptic number.

1011521532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011521532 is an abundant number, since it is smaller than the sum of its proper divisors (1685869444).

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

1011521532 is a wasteful number, since it uses less digits than its factorization.

1011521532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12041937 (or 12041935 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1011521532 is about 31804.4262957218. The cubic root of 1011521532 is about 1003.8258548349.

Adding to 1011521532 its reverse (2351251101), we get a palindrome (3362772633).

The spelling of 1011521532 in words is "one billion, eleven million, five hundred twenty-one thousand, five hundred thirty-two".