1012520551 has 8 divisors (see below), whose sum is σ = 1157359104. Its totient is φ = 867730200.

The previous prime is 1012520539. The next prime is 1012520617. The reversal of 1012520551 is 1550252101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012520551 - 2⁵ = 1012520519 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73086 + ... + 85828.

It is an arithmetic number, because the mean of its divisors is an integer number (144669888).

Almost surely, 2^1012520551 is an apocalyptic number.

1012520551 is a deficient number, since it is larger than the sum of its proper divisors (144838553).

1012520551 is a wasteful number, since it uses less digits than its factorization.

1012520551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24101.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1012520551 is about 31820.1280795662. The cubic root of 1012520551 is about 1004.1562189126.

Adding to 1012520551 its reverse (1550252101), we get a palindrome (2562772652).

The spelling of 1012520551 in words is "one billion, twelve million, five hundred twenty thousand, five hundred fifty-one".