51703445 has 4 divisors (see below), whose sum is σ = 62044140. Its totient is φ = 41362752.

The previous prime is 51703441. The next prime is 51703453. The reversal of 51703445 is 54430715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54430715 = 5 ⋅10886143.

It can be written as a sum of positive squares in 2 ways, for example, as 22033636 + 29669809 = 4694^2 + 5447^2 .

It is a cyclic number.

It is not a de Polignac number, because 51703445 - 2² = 51703441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51703441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5170340 + ... + 5170349.

It is an arithmetic number, because the mean of its divisors is an integer number (15511035).

Almost surely, 2^51703445 is an apocalyptic number.

It is an amenable number.

51703445 is a deficient number, since it is larger than the sum of its proper divisors (10340695).

51703445 is a wasteful number, since it uses less digits than its factorization.

51703445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340694.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 51703445 is about 7190.5107607179. The cubic root of 51703445 is about 372.5402145674.

The spelling of 51703445 in words is "fifty-one million, seven hundred three thousand, four hundred forty-five".