921017050 has 12 divisors (see below), whose sum is σ = 1713091806. Its totient is φ = 368406800.

The previous prime is 921017047. The next prime is 921017057. The reversal of 921017050 is 50710129.

It can be written as a sum of positive squares in 3 ways, for example, as 344584969 + 576432081 = 18563^2 + 24009^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (921017057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9210121 + ... + 9210220.

Almost surely, 2^921017050 is an apocalyptic number.

921017050 is a deficient number, since it is larger than the sum of its proper divisors (792074756).

921017050 is a wasteful number, since it uses less digits than its factorization.

921017050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18420353 (or 18420348 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 921017050 is about 30348.2627179877. The cubic root of 921017050 is about 972.9470896911.

Adding to 921017050 its reverse (50710129), we get a palindrome (971727179).

The spelling of 921017050 in words is "nine hundred twenty-one million, seventeen thousand, fifty".