51020702 has 4 divisors (see below), whose sum is σ = 76531056. Its totient is φ = 25510350.

The previous prime is 51020677. The next prime is 51020731. The reversal of 51020702 is 20702015.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×51020702² = 5206224065145608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12755174 + ... + 12755177.

It is an arithmetic number, because the mean of its divisors is an integer number (19132764).

Almost surely, 2^51020702 is an apocalyptic number.

51020702 is a deficient number, since it is larger than the sum of its proper divisors (25510354).

51020702 is a wasteful number, since it uses less digits than its factorization.

51020702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25510353.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 51020702 is about 7142.8777113990. The cubic root of 51020702 is about 370.8931478597.

Adding to 51020702 its reverse (20702015), we get a palindrome (71722717).

It can be divided in two parts, 510 and 20702, that added together give a palindrome (21212).

The spelling of 51020702 in words is "fifty-one million, twenty thousand, seven hundred two".