1077522381 has 12 divisors (see below), whose sum is σ = 1676146108. Its totient is φ = 663090624.

The previous prime is 1077522379. The next prime is 1077522401. The reversal of 1077522381 is 1832257701.

It can be written as a sum of positive squares in 2 ways, for example, as 234549225 + 842973156 = 15315^2 + 29034^2 .

It is not a de Polignac number, because 1077522381 - 2¹ = 1077522379 is a prime.

It is a super-2 number, since 2×1077522381² = 2322108963111818322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1077522311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4604680 + ... + 4604913.

Almost surely, 2^1077522381 is an apocalyptic number.

It is an amenable number.

1077522381 is a deficient number, since it is larger than the sum of its proper divisors (598623727).

1077522381 is a wasteful number, since it uses less digits than its factorization.

1077522381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209612 (or 9209609 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1077522381 is about 32825.6360334419. The cubic root of 1077522381 is about 1025.2003989691.

The spelling of 1077522381 in words is "one billion, seventy-seven million, five hundred twenty-two thousand, three hundred eighty-one".