612561451 has 8 divisors (see below), whose sum is σ = 623397600. Its totient is φ = 601751040.

The previous prime is 612561419. The next prime is 612561473. The reversal of 612561451 is 154165216.

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 612561451 - 2⁵ = 612561419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612561491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45195 + ... + 57163.

It is an arithmetic number, because the mean of its divisors is an integer number (77924700).

Almost surely, 2^612561451 is an apocalyptic number.

612561451 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

612561451 is a deficient number, since it is larger than the sum of its proper divisors (10836149).

612561451 is a wasteful number, since it uses less digits than its factorization.

612561451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12869.

The product of its digits is 7200, while the sum is 31.

The square root of 612561451 is about 24749.9788080717. The cubic root of 612561451 is about 849.2780263895.

It can be divided in two parts, 6125 and 61451, that added together give a palindrome (67576).

The spelling of 612561451 in words is "six hundred twelve million, five hundred sixty-one thousand, four hundred fifty-one".