51124245 has 32 divisors (see below), whose sum is σ = 85173120. Its totient is φ = 26154240.

The previous prime is 51124243. The next prime is 51124247. The reversal of 51124245 is 54242115.

It is an interprime number because it is at equal distance from previous prime (51124243) and next prime (51124247).

It is not a de Polignac number, because 51124245 - 2¹ = 51124243 is a prime.

It is a super-2 number, since 2×51124245² = 5227376853640050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51124243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91507 + ... + 92063.

It is an arithmetic number, because the mean of its divisors is an integer number (2661660).

Almost surely, 2^51124245 is an apocalyptic number.

It is an amenable number.

51124245 is a deficient number, since it is larger than the sum of its proper divisors (34048875).

51124245 is a wasteful number, since it uses less digits than its factorization.

51124245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805.

The product of its digits is 1600, while the sum is 24.

The square root of 51124245 is about 7150.1220269307. The cubic root of 51124245 is about 371.1438790201.

It can be divided in two parts, 5 and 1124245, that added together give a triangular number (1124250 = T₁₄₉₉).

The spelling of 51124245 in words is "fifty-one million, one hundred twenty-four thousand, two hundred forty-five".