51141899 has 4 divisors (see below), whose sum is σ = 54150264. Its totient is φ = 48133536.

The previous prime is 51141889. The next prime is 51141907. The reversal of 51141899 is 99814115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99814115 = 5 ⋅19962823.

It is a cyclic number.

It is not a de Polignac number, because 51141899 - 2¹² = 51137803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51141809) 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, 1504157 + ... + 1504190.

It is an arithmetic number, because the mean of its divisors is an integer number (13537566).

Almost surely, 2^51141899 is an apocalyptic number.

51141899 is a deficient number, since it is larger than the sum of its proper divisors (3008365).

51141899 is a wasteful number, since it uses less digits than its factorization.

51141899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008364.

The product of its digits is 12960, while the sum is 38.

The square root of 51141899 is about 7151.3564447593. The cubic root of 51141899 is about 371.1865946957.

The spelling of 51141899 in words is "fifty-one million, one hundred forty-one thousand, eight hundred ninety-nine".