51106465 has 4 divisors (see below), whose sum is σ = 61327764. Its totient is φ = 40885168.

The previous prime is 51106441. The next prime is 51106481. The reversal of 51106465 is 56460115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40602384 + 10504081 = 6372^2 + 3241^2 .

It is a cyclic number.

It is not a de Polignac number, because 51106465 - 2¹³ = 51098273 is a prime.

It is a super-2 number, since 2×51106465² = 5223741529592450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5110642 + ... + 5110651.

It is an arithmetic number, because the mean of its divisors is an integer number (15331941).

Almost surely, 2^51106465 is an apocalyptic number.

It is an amenable number.

51106465 is a deficient number, since it is larger than the sum of its proper divisors (10221299).

51106465 is a wasteful number, since it uses less digits than its factorization.

51106465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221298.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51106465 is about 7148.8785833863. The cubic root of 51106465 is about 371.1008485342.

The spelling of 51106465 in words is "fifty-one million, one hundred six thousand, four hundred sixty-five".