51069701 has 4 divisors (see below), whose sum is σ = 53757600. Its totient is φ = 48381804.

The previous prime is 51069691. The next prime is 51069703. The reversal of 51069701 is 10796015.

It is a happy number.

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 51069701 - 2¹⁸ = 50807557 is a prime.

It is a super-2 number, since 2×51069701² = 5216228720458802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51069703) 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, 1343921 + ... + 1343958.

It is an arithmetic number, because the mean of its divisors is an integer number (13439400).

Almost surely, 2^51069701 is an apocalyptic number.

It is an amenable number.

51069701 is a deficient number, since it is larger than the sum of its proper divisors (2687899).

51069701 is a wasteful number, since it uses less digits than its factorization.

51069701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687898.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 51069701 is about 7146.3068084151. The cubic root of 51069701 is about 371.0118420236.

The spelling of 51069701 in words is "fifty-one million, sixty-nine thousand, seven hundred one".