51450151 has 4 divisors (see below), whose sum is σ = 51513192. Its totient is φ = 51387112.

The previous prime is 51450131. The next prime is 51450167. The reversal of 51450151 is 15105415.

It is a happy number.

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 51450151 - 2²¹ = 49352999 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 (51450131) 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, 30280 + ... + 31933.

It is an arithmetic number, because the mean of its divisors is an integer number (12878298).

Almost surely, 2^51450151 is an apocalyptic number.

51450151 is a deficient number, since it is larger than the sum of its proper divisors (63041).

51450151 is an equidigital number, since it uses as much as digits as its factorization.

51450151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63040.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 51450151 is about 7172.8760619434. The cubic root of 51450151 is about 371.9308630717.

Adding to 51450151 its reverse (15105415), we get a palindrome (66555566).

The spelling of 51450151 in words is "fifty-one million, four hundred fifty thousand, one hundred fifty-one".