53651378 has 16 divisors (see below), whose sum is σ = 87907680. Its totient is φ = 24355200.

The previous prime is 53651333. The next prime is 53651407. The reversal of 53651378 is 87315635.

It is a super-2 number, since 2×53651378² = 5756940722597768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27458 + ... + 29346.

It is an arithmetic number, because the mean of its divisors is an integer number (5494230).

Almost surely, 2^53651378 is an apocalyptic number.

53651378 is a deficient number, since it is larger than the sum of its proper divisors (34256302).

53651378 is a wasteful number, since it uses less digits than its factorization.

53651378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193.

The product of its digits is 75600, while the sum is 38.

The square root of 53651378 is about 7324.7100966523. The cubic root of 53651378 is about 377.1611578722.

The spelling of 53651378 in words is "fifty-three million, six hundred fifty-one thousand, three hundred seventy-eight".