51245494 has 12 divisors (see below), whose sum is σ = 79612884. Its totient is φ = 24738392.

The previous prime is 51245479. The next prime is 51245501. The reversal of 51245494 is 49454215.

It is a super-2 number, since 2×51245494² = 5252201310608072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13552 + ... + 16915.

It is an arithmetic number, because the mean of its divisors is an integer number (6634407).

Almost surely, 2^51245494 is an apocalyptic number.

51245494 is a deficient number, since it is larger than the sum of its proper divisors (28367390).

51245494 is a wasteful number, since it uses less digits than its factorization.

51245494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30527 (or 30498 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 51245494 is about 7158.5958120291. The cubic root of 51245494 is about 371.4370556107.

It can be divided in two parts, 5124 and 5494, that multiplied together give a triangular number (28151256 = T₇₅₀₃).

The spelling of 51245494 in words is "fifty-one million, two hundred forty-five thousand, four hundred ninety-four".