51455408 has 10 divisors (see below), whose sum is σ = 99694884. Its totient is φ = 25727696.

The previous prime is 51455399. The next prime is 51455423. The reversal of 51455408 is 80455415.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607966 + ... + 1607997.

Almost surely, 2^51455408 is an apocalyptic number.

It is an amenable number.

51455408 is a deficient number, since it is larger than the sum of its proper divisors (48239476).

51455408 is a wasteful number, since it uses less digits than its factorization.

51455408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215971 (or 3215965 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 51455408 is about 7173.2425025228. The cubic root of 51455408 is about 371.9435301804.

Adding to 51455408 its sum of digits (32), we get a triangular number (51455440 = T₁₀₁₄₄).

The spelling of 51455408 in words is "fifty-one million, four hundred fifty-five thousand, four hundred eight".