51026415 has 16 divisors (see below), whose sum is σ = 89064576. Its totient is φ = 24740000.

The previous prime is 51026411. The next prime is 51026429. The reversal of 51026415 is 51462015.

It is not a de Polignac number, because 51026415 - 2² = 51026411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51026411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154461 + ... + 154790.

It is an arithmetic number, because the mean of its divisors is an integer number (5566536).

Almost surely, 2^51026415 is an apocalyptic number.

51026415 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51026415 is a deficient number, since it is larger than the sum of its proper divisors (38038161).

51026415 is a wasteful number, since it uses less digits than its factorization.

51026415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309270.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51026415 is about 7143.2776090531. The cubic root of 51026415 is about 370.9069908253.

Subtracting 51026415 from its reverse (51462015), we obtain a square (435600 = 660²).

The spelling of 51026415 in words is "fifty-one million, twenty-six thousand, four hundred fifteen".