51125145 has 8 divisors (see below), whose sum is σ = 81800256. Its totient is φ = 27266736.

The previous prime is 51125131. The next prime is 51125149. The reversal of 51125145 is 54152115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51125145 - 2¹³ = 51116953 is a prime.

It is a super-2 number, since 2×51125145² = 5227560902542050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51125149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704157 + ... + 1704186.

It is an arithmetic number, because the mean of its divisors is an integer number (10225032).

Almost surely, 2^51125145 is an apocalyptic number.

It is an amenable number.

51125145 is a deficient number, since it is larger than the sum of its proper divisors (30675111).

51125145 is a wasteful number, since it uses less digits than its factorization.

51125145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408351.

The product of its digits is 1000, while the sum is 24.

The square root of 51125145 is about 7150.1849626426. The cubic root of 51125145 is about 371.1460569009.

The spelling of 51125145 in words is "fifty-one million, one hundred twenty-five thousand, one hundred forty-five".