522156540 has 48 divisors (see below), whose sum is σ = 1463299488. Its totient is φ = 139121664.

The previous prime is 522156497. The next prime is 522156553. The reversal of 522156540 is 45651225.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 522156498 and 522156507.

It is a congruent number.

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, 82944 + ... + 89016.

It is an arithmetic number, because the mean of its divisors is an integer number (30485406).

Almost surely, 2^522156540 is an apocalyptic number.

It is an amenable number.

522156540 is an abundant number, since it is smaller than the sum of its proper divisors (941142948).

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

522156540 is a wasteful number, since it uses less digits than its factorization.

522156540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7518 (or 7516 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 522156540 is about 22850.7448456281. The cubic root of 522156540 is about 805.2552667049.

The spelling of 522156540 in words is "five hundred twenty-two million, one hundred fifty-six thousand, five hundred forty".