1021451156 has 48 divisors (see below), whose sum is σ = 2031184512. Its totient is φ = 445334400.

The previous prime is 1021451117. The next prime is 1021451159. The reversal of 1021451156 is 6511541201.

1021451156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021451159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111170 + ... + 120006.

It is an arithmetic number, because the mean of its divisors is an integer number (42316344).

Almost surely, 2^1021451156 is an apocalyptic number.

It is an amenable number.

1021451156 is a deficient number, since it is larger than the sum of its proper divisors (1009733356).

1021451156 is a wasteful number, since it uses less digits than its factorization.

1021451156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8960 (or 8958 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1021451156 is about 31960.1494990246. The cubic root of 1021451156 is about 1007.0998580525.

Adding to 1021451156 its reverse (6511541201), we get a palindrome (7532992357).

It can be divided in two parts, 102145 and 1156, that added together give a palindrome (103301).

The spelling of 1021451156 in words is "one billion, twenty-one million, four hundred fifty-one thousand, one hundred fifty-six".