51902029 has 4 divisors (see below), whose sum is σ = 53576320. Its totient is φ = 50227740.

The previous prime is 51902027. The next prime is 51902047. The reversal of 51902029 is 92020915.

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 51902029 - 2¹ = 51902027 is a prime.

It is a super-2 number, since 2×51902029² = 5387641228633682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51901988 and 51902006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51902021) 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, 837099 + ... + 837160.

It is an arithmetic number, because the mean of its divisors is an integer number (13394080).

Almost surely, 2^51902029 is an apocalyptic number.

It is an amenable number.

51902029 is a deficient number, since it is larger than the sum of its proper divisors (1674291).

51902029 is a wasteful number, since it uses less digits than its factorization.

51902029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674290.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 51902029 is about 7204.3062816624. The cubic root of 51902029 is about 373.0165594356.

The spelling of 51902029 in words is "fifty-one million, nine hundred two thousand, twenty-nine".