1522172506540 has 48 divisors (see below), whose sum is σ = 3667428942912. Its totient is φ = 519857012736.

The previous prime is 1522172506523. The next prime is 1522172506559. The reversal of 1522172506540 is 456052712251.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1522172506493 and 1522172506502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21117057 + ... + 21189016.

It is an arithmetic number, because the mean of its divisors is an integer number (76404769644).

Almost surely, 2^{1522172506540} is an apocalyptic number.

1522172506540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1522172506540 is an abundant number, since it is smaller than the sum of its proper divisors (2145256436372).

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

1522172506540 is a wasteful number, since it uses less digits than its factorization.

1522172506540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42306346 (or 42306344 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 1522172506540 in words is "one trillion, five hundred twenty-two billion, one hundred seventy-two million, five hundred six thousand, five hundred forty".