1012520355 has 256 divisors, whose sum is σ = 2311372800. Its totient is φ = 365783040.

The previous prime is 1012520351. The next prime is 1012520363. The reversal of 1012520355 is 5530252101.

It is a happy number.

It is not a de Polignac number, because 1012520355 - 2² = 1012520351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012520351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 23546964 + ... + 23547006.

It is an arithmetic number, because the mean of its divisors is an integer number (9028800).

Almost surely, 2^1012520355 is an apocalyptic number.

1012520355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1012520355 is an abundant number, since it is smaller than the sum of its proper divisors (1298852445).

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

1012520355 is a wasteful number, since it uses less digits than its factorization.

1012520355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1012520355 is about 31820.1249997545. The cubic root of 1012520355 is about 1004.1561541190.

Adding to 1012520355 its reverse (5530252101), we get a palindrome (6542772456).

The spelling of 1012520355 in words is "one billion, twelve million, five hundred twenty thousand, three hundred fifty-five".