130521456 has 200 divisors, whose sum is σ = 416751104. Its totient is φ = 39191040.

The previous prime is 130521451. The next prime is 130521493. The reversal of 130521456 is 654125031.

130521456 is a `hidden beast` number, since 130 + 521 + 4 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130521451) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1027665 + ... + 1027791.

Almost surely, 2^130521456 is an apocalyptic number.

130521456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130521456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208375552).

130521456 is an abundant number, since it is smaller than the sum of its proper divisors (286229648).

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

130521456 is a wasteful number, since it uses less digits than its factorization.

130521456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 130521456 is about 11424.5987238065. The cubic root of 130521456 is about 507.2561291198.

Adding to 130521456 its reverse (654125031), we get a palindrome (784646487).

The spelling of 130521456 in words is "one hundred thirty million, five hundred twenty-one thousand, four hundred fifty-six".