51234345 has 24 divisors (see below), whose sum is σ = 94031496. Its totient is φ = 25717248.

The previous prime is 51234343. The next prime is 51234347. The reversal of 51234345 is 54343215.

It is an interprime number because it is at equal distance from previous prime (51234343) and next prime (51234347).

It can be written as a sum of positive squares in 4 ways, for example, as 5143824 + 46090521 = 2268^2 + 6789^2 .

It is not a de Polignac number, because 51234345 - 2¹ = 51234343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51234343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32722 + ... + 34251.

It is an arithmetic number, because the mean of its divisors is an integer number (3917979).

Almost surely, 2^51234345 is an apocalyptic number.

It is an amenable number.

51234345 is a deficient number, since it is larger than the sum of its proper divisors (42797151).

51234345 is a wasteful number, since it uses less digits than its factorization.

51234345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67001 (or 66998 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 51234345 is about 7157.8170554995. The cubic root of 51234345 is about 371.4101169684.

The spelling of 51234345 in words is "fifty-one million, two hundred thirty-four thousand, three hundred forty-five".