51520262 has 4 divisors (see below), whose sum is σ = 77280396. Its totient is φ = 25760130.

The previous prime is 51520247. The next prime is 51520277. The reversal of 51520262 is 26202515.

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

It is an interprime number because it is at equal distance from previous prime (51520247) and next prime (51520277).

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, 12880064 + ... + 12880067.

It is an arithmetic number, because the mean of its divisors is an integer number (19320099).

Almost surely, 2^51520262 is an apocalyptic number.

51520262 is a deficient number, since it is larger than the sum of its proper divisors (25760134).

51520262 is a wasteful number, since it uses less digits than its factorization.

51520262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25760133.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51520262 is about 7177.7616288088. The cubic root of 51520262 is about 372.0997294950.

Adding to 51520262 its reverse (26202515), we get a palindrome (77722777).

The spelling of 51520262 in words is "fifty-one million, five hundred twenty thousand, two hundred sixty-two".