51469290 has 128 divisors (see below), whose sum is σ = 147456000. Its totient is φ = 12737088.

The previous prime is 51469283. The next prime is 51469303. The reversal of 51469290 is 9296415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 405207 + ... + 405333.

It is an arithmetic number, because the mean of its divisors is an integer number (1152000).

Almost surely, 2^51469290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51469290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73728000).

51469290 is an abundant number, since it is smaller than the sum of its proper divisors (95986710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51469290 is a wasteful number, since it uses less digits than its factorization.

51469290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 51469290 is about 7174.2100610450. The cubic root of 51469290 is about 371.9769756822.

The spelling of 51469290 in words is "fifty-one million, four hundred sixty-nine thousand, two hundred ninety".