51535401 has 8 divisors (see below), whose sum is σ = 70389984. Its totient is φ = 33518880.

The previous prime is 51535369. The next prime is 51535409. The reversal of 51535401 is 10453515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51535401 - 2⁵ = 51535369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51535409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209371 + ... + 209616.

It is an arithmetic number, because the mean of its divisors is an integer number (8798748).

Almost surely, 2^51535401 is an apocalyptic number.

It is an amenable number.

51535401 is a deficient number, since it is larger than the sum of its proper divisors (18854583).

51535401 is a wasteful number, since it uses less digits than its factorization.

51535401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419031.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 51535401 is about 7178.8161280256. The cubic root of 51535401 is about 372.1361725429.

Adding to 51535401 its reverse (10453515), we get a palindrome (61988916).

The spelling of 51535401 in words is "fifty-one million, five hundred thirty-five thousand, four hundred one".