51097345 has 16 divisors (see below), whose sum is σ = 66184272. Its totient is φ = 37647360.

The previous prime is 51097339. The next prime is 51097379. The reversal of 51097345 is 54379015.

It can be written as a sum of positive squares in 8 ways, for example, as 5494336 + 45603009 = 2344^2 + 6753^2 .

It is not a de Polignac number, because 51097345 - 2¹³ = 51089153 is a prime.

It is a super-2 number, since 2×51097345² = 5221877332098050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51097345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48949 + ... + 49981.

It is an arithmetic number, because the mean of its divisors is an integer number (4136517).

Almost surely, 2^51097345 is an apocalyptic number.

It is an amenable number.

51097345 is a deficient number, since it is larger than the sum of its proper divisors (15086927).

51097345 is a wasteful number, since it uses less digits than its factorization.

51097345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 51097345 is about 7148.2406926460. The cubic root of 51097345 is about 371.0787727813.

The spelling of 51097345 in words is "fifty-one million, ninety-seven thousand, three hundred forty-five".