1021652 has 6 divisors (see below), whose sum is σ = 1787898. Its totient is φ = 510824.

The previous prime is 1021651. The next prime is 1021661. The reversal of 1021652 is 2561201.

It can be written as a sum of positive squares in only one way, i.e., 894916 + 126736 = 946^2 + 356^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1021652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127703 + ... + 127710.

It is an arithmetic number, because the mean of its divisors is an integer number (297983).

2^1021652 is an apocalyptic number.

It is an amenable number.

1021652 is a deficient number, since it is larger than the sum of its proper divisors (766246).

1021652 is a wasteful number, since it uses less digits than its factorization.

1021652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255417 (or 255415 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1021652 is about 1010.7680248207. The cubic root of 1021652 is about 100.7165861113.

Adding to 1021652 its reverse (2561201), we get a palindrome (3582853).

The spelling of 1021652 in words is "one million, twenty-one thousand, six hundred fifty-two".