51401415 has 16 divisors (see below), whose sum is σ = 88568928. Its totient is φ = 25305216.

The previous prime is 51401411. The next prime is 51401419. The reversal of 51401415 is 51410415.

It is an interprime number because it is at equal distance from previous prime (51401411) and next prime (51401419).

It is not a de Polignac number, because 51401415 - 2² = 51401411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51401391 and 51401400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51401411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131604 + ... + 131993.

It is an arithmetic number, because the mean of its divisors is an integer number (5535558).

Almost surely, 2^51401415 is an apocalyptic number.

51401415 is a deficient number, since it is larger than the sum of its proper divisors (37167513).

51401415 is a wasteful number, since it uses less digits than its factorization.

51401415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263618.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 51401415 is about 7169.4780144722. The cubic root of 51401415 is about 371.8133891764.

It can be divided in two parts, 5140 and 1415, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 51401415 in words is "fifty-one million, four hundred one thousand, four hundred fifteen".