51651542 has 8 divisors (see below), whose sum is σ = 82034856. Its totient is φ = 24306592.

The previous prime is 51651541. The next prime is 51651553. The reversal of 51651542 is 24515615.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651541) 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, 759548 + ... + 759615.

It is an arithmetic number, because the mean of its divisors is an integer number (10254357).

Almost surely, 2^51651542 is an apocalyptic number.

51651542 is a deficient number, since it is larger than the sum of its proper divisors (30383314).

51651542 is a wasteful number, since it uses less digits than its factorization.

51651542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519182.

The product of its digits is 6000, while the sum is 29.

The square root of 51651542 is about 7186.9007228429. The cubic root of 51651542 is about 372.4155134728.

The spelling of 51651542 in words is "fifty-one million, six hundred fifty-one thousand, five hundred forty-two".