51470390 has 16 divisors (see below), whose sum is σ = 98096832. Its totient is φ = 19377024.

The previous prime is 51470383. The next prime is 51470401. The reversal of 51470390 is 9307415.

It is a super-4 number, since 4×51470390⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

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, 151214 + ... + 151553.

It is an arithmetic number, because the mean of its divisors is an integer number (6131052).

Almost surely, 2^51470390 is an apocalyptic number.

51470390 is a deficient number, since it is larger than the sum of its proper divisors (46626442).

51470390 is a wasteful number, since it uses less digits than its factorization.

51470390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302791.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 51470390 is about 7174.2867241281. The cubic root of 51470390 is about 371.9796256232.

The spelling of 51470390 in words is "fifty-one million, four hundred seventy thousand, three hundred ninety".