51430436 has 6 divisors (see below), whose sum is σ = 90003270. Its totient is φ = 25715216.

The previous prime is 51430411. The next prime is 51430453. The reversal of 51430436 is 63403415.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 164836 = 7160^2 + 406^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428801 + ... + 6428808.

It is an arithmetic number, because the mean of its divisors is an integer number (15000545).

Almost surely, 2^51430436 is an apocalyptic number.

It is an amenable number.

51430436 is a deficient number, since it is larger than the sum of its proper divisors (38572834).

51430436 is a wasteful number, since it uses less digits than its factorization.

51430436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12857613 (or 12857611 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 51430436 is about 7171.5016558598. The cubic root of 51430436 is about 371.8833507152.

The spelling of 51430436 in words is "fifty-one million, four hundred thirty thousand, four hundred thirty-six".