651537423 has 6 divisors (see below), whose sum is σ = 941109624. Its totient is φ = 434358276.

The previous prime is 651537389. The next prime is 651537463. The reversal of 651537423 is 324735156.

It is a de Polignac number, because none of the positive numbers 2^k-651537423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651537463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36196515 + ... + 36196532.

It is an arithmetic number, because the mean of its divisors is an integer number (156851604).

Almost surely, 2^651537423 is an apocalyptic number.

651537423 is a deficient number, since it is larger than the sum of its proper divisors (289572201).

651537423 is a wasteful number, since it uses less digits than its factorization.

651537423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72393053 (or 72393050 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 651537423 is about 25525.2311057119. The cubic root of 651537423 is about 866.9215295974.

The spelling of 651537423 in words is "six hundred fifty-one million, five hundred thirty-seven thousand, four hundred twenty-three".