51151401 has 48 divisors (see below), whose sum is σ = 89789440. Its totient is φ = 27410400.

The previous prime is 51151357. The next prime is 51151403. The reversal of 51151401 is 10415115.

It is a happy number.

It is not a de Polignac number, because 51151401 - 2⁶ = 51151337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51151403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180606 + ... + 180888.

Almost surely, 2^51151401 is an apocalyptic number.

It is an amenable number.

51151401 is a deficient number, since it is larger than the sum of its proper divisors (38638039).

51151401 is a wasteful number, since it uses less digits than its factorization.

51151401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 51151401 is about 7152.0207633927. The cubic root of 51151401 is about 371.2095816964.

Adding to 51151401 its reverse (10415115), we get a palindrome (61566516).

The spelling of 51151401 in words is "fifty-one million, one hundred fifty-one thousand, four hundred one".