51402355 has 16 divisors (see below), whose sum is σ = 66588480. Its totient is φ = 37975168.

The previous prime is 51402347. The next prime is 51402359. The reversal of 51402355 is 55320415.

It is a cyclic number.

It is not a de Polignac number, because 51402355 - 2³ = 51402347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51402359) 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, 4372 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (4161780).

Almost surely, 2^51402355 is an apocalyptic number.

51402355 is a deficient number, since it is larger than the sum of its proper divisors (15186125).

51402355 is a wasteful number, since it uses less digits than its factorization.

51402355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15470.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 51402355 is about 7169.5435698516. The cubic root of 51402355 is about 371.8156556669.

The spelling of 51402355 in words is "fifty-one million, four hundred two thousand, three hundred fifty-five".