51621362 has 16 divisors (see below), whose sum is σ = 83533632. Its totient is φ = 23783760.

The previous prime is 51621359. The next prime is 51621431. The reversal of 51621362 is 26312615.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17537 + ... + 20267.

It is an arithmetic number, because the mean of its divisors is an integer number (5220852).

Almost surely, 2^51621362 is an apocalyptic number.

51621362 is a deficient number, since it is larger than the sum of its proper divisors (31912270).

51621362 is a wasteful number, since it uses less digits than its factorization.

51621362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473.

The product of its digits is 2160, while the sum is 26.

The square root of 51621362 is about 7184.8007627213. The cubic root of 51621362 is about 372.3429652031.

Adding to 51621362 its reverse (26312615), we get a palindrome (77933977).

The spelling of 51621362 in words is "fifty-one million, six hundred twenty-one thousand, three hundred sixty-two".