51060621 has 16 divisors (see below), whose sum is σ = 72777600. Its totient is φ = 31764480.

The previous prime is 51060617. The next prime is 51060641. The reversal of 51060621 is 12606015.

It is a happy number.

It is not a de Polignac number, because 51060621 - 2² = 51060617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51060601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6196 + ... + 11853.

It is an arithmetic number, because the mean of its divisors is an integer number (4548600).

Almost surely, 2^51060621 is an apocalyptic number.

It is an amenable number.

51060621 is a deficient number, since it is larger than the sum of its proper divisors (21716979).

51060621 is a wasteful number, since it uses less digits than its factorization.

51060621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18116.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51060621 is about 7145.6714869913. The cubic root of 51060621 is about 370.9898525522.

Adding to 51060621 its reverse (12606015), we get a palindrome (63666636).

It can be divided in two parts, 51060 and 621, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 51060621 in words is "fifty-one million, sixty thousand, six hundred twenty-one".