51450545 has 16 divisors (see below), whose sum is σ = 64945152. Its totient is φ = 39074880.

The previous prime is 51450533. The next prime is 51450557. The reversal of 51450545 is 54505415.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51450533) and next prime (51450557).

It is not a de Polignac number, because 51450545 - 2⁶ = 51450481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5084 + ... + 11346.

It is an arithmetic number, because the mean of its divisors is an integer number (4059072).

Almost surely, 2^51450545 is an apocalyptic number.

It is an amenable number.

51450545 is a deficient number, since it is larger than the sum of its proper divisors (13494607).

51450545 is a wasteful number, since it uses less digits than its factorization.

51450545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6352.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 51450545 is about 7172.9035264668. The cubic root of 51450545 is about 371.9318124721.

The spelling of 51450545 in words is "fifty-one million, four hundred fifty thousand, five hundred forty-five".