51402352 has 10 divisors (see below), whose sum is σ = 99592088. Its totient is φ = 25701168.

The previous prime is 51402347. The next prime is 51402359. The reversal of 51402352 is 25320415.

It is a super-2 number, since 2×51402352² = 5284403582263808, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1606308 + ... + 1606339.

Almost surely, 2^51402352 is an apocalyptic number.

It is an amenable number.

51402352 is a deficient number, since it is larger than the sum of its proper divisors (48189736).

51402352 is a wasteful number, since it uses less digits than its factorization.

51402352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212655 (or 3212649 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51402352 is about 7169.5433606332. The cubic root of 51402352 is about 371.8156484335.

Adding to 51402352 its reverse (25320415), we get a palindrome (76722767).

The spelling of 51402352 in words is "fifty-one million, four hundred two thousand, three hundred fifty-two".