612122553 has 36 divisors (see below), whose sum is σ = 1089047700. Its totient is φ = 329204736.

The previous prime is 612122549. The next prime is 612122557. The reversal of 612122553 is 355221216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (612122549) and next prime (612122557).

It can be written as a sum of positive squares in 2 ways, for example, as 498316329 + 113806224 = 22323^2 + 10668^2 .

It is not a de Polignac number, because 612122553 - 2² = 612122549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612122557) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33328 + ... + 48321.

It is an arithmetic number, because the mean of its divisors is an integer number (30251325).

Almost surely, 2^612122553 is an apocalyptic number.

612122553 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

612122553 is a deficient number, since it is larger than the sum of its proper divisors (476925147).

612122553 is a wasteful number, since it uses less digits than its factorization.

612122553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81686 (or 81676 counting only the distinct ones).

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

The square root of 612122553 is about 24741.1105854204. The cubic root of 612122553 is about 849.0751430783.

Adding to 612122553 its reverse (355221216), we get a palindrome (967343769).

The spelling of 612122553 in words is "six hundred twelve million, one hundred twenty-two thousand, five hundred fifty-three".