51155141 has 4 divisors (see below), whose sum is σ = 51771552. Its totient is φ = 50538732.

The previous prime is 51155119. The next prime is 51155147. The reversal of 51155141 is 14155115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51155141 - 2⁶ = 51155077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51155147) 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, 308081 + ... + 308246.

It is an arithmetic number, because the mean of its divisors is an integer number (12942888).

Almost surely, 2^51155141 is an apocalyptic number.

It is an amenable number.

51155141 is a deficient number, since it is larger than the sum of its proper divisors (616411).

51155141 is an equidigital number, since it uses as much as digits as its factorization.

51155141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616410.

The product of its digits is 500, while the sum is 23.

The square root of 51155141 is about 7152.2822231788. The cubic root of 51155141 is about 371.2186286301.

The spelling of 51155141 in words is "fifty-one million, one hundred fifty-five thousand, one hundred forty-one".