1021012552 has 16 divisors (see below), whose sum is σ = 2187884160. Its totient is φ = 437576784.

The previous prime is 1021012543. The next prime is 1021012583. The reversal of 1021012552 is 2552101201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9116128 + ... + 9116239.

It is an arithmetic number, because the mean of its divisors is an integer number (136742760).

Almost surely, 2^1021012552 is an apocalyptic number.

It is an amenable number.

1021012552 is an abundant number, since it is smaller than the sum of its proper divisors (1166871608).

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

1021012552 is a wasteful number, since it uses less digits than its factorization.

1021012552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18232380 (or 18232376 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1021012552 is about 31953.2870296625. The cubic root of 1021012552 is about 1006.9556901980.

Adding to 1021012552 its reverse (2552101201), we get a palindrome (3573113753).

It can be divided in two parts, 102101 and 2552, that added together give a triangular number (104653 = T₄₅₇).

The spelling of 1021012552 in words is "one billion, twenty-one million, twelve thousand, five hundred fifty-two".