51190151 has 4 divisors (see below), whose sum is σ = 51240000. Its totient is φ = 51140304.

The previous prime is 51190141. The next prime is 51190177. The reversal of 51190151 is 15109115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51190151 - 2²² = 46995847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51190121) 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, 23351 + ... + 25448.

It is an arithmetic number, because the mean of its divisors is an integer number (12810000).

Almost surely, 2^51190151 is an apocalyptic number.

51190151 is a deficient number, since it is larger than the sum of its proper divisors (49849).

51190151 is a wasteful number, since it uses less digits than its factorization.

51190151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49848.

The product of its (nonzero) digits is 225, while the sum is 23.

The square root of 51190151 is about 7154.7292751019. The cubic root of 51190151 is about 371.3032952619.

Adding to 51190151 its reverse (15109115), we get a palindrome (66299266).

The spelling of 51190151 in words is "fifty-one million, one hundred ninety thousand, one hundred fifty-one".