51223037 has 4 divisors (see below), whose sum is σ = 51626496. Its totient is φ = 50819580.

The previous prime is 51223027. The next prime is 51223043. The reversal of 51223037 is 73032215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51223037 - 2⁶ = 51222973 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 (51223027) 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, 201539 + ... + 201792.

It is an arithmetic number, because the mean of its divisors is an integer number (12906624).

Almost surely, 2^51223037 is an apocalyptic number.

It is an amenable number.

51223037 is a deficient number, since it is larger than the sum of its proper divisors (403459).

51223037 is a wasteful number, since it uses less digits than its factorization.

51223037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403458.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 51223037 is about 7157.0271062781. The cubic root of 51223037 is about 371.3827901519.

The spelling of 51223037 in words is "fifty-one million, two hundred twenty-three thousand, thirty-seven".