53464440 has 32 divisors (see below), whose sum is σ = 160393680. Its totient is φ = 14257152.

The previous prime is 53464417. The next prime is 53464457. The reversal of 53464440 is 4446435.

53464440 = T₃₅₅ + T₃₅₆ + ... + T₇₁₄.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53464398 and 53464407.

It is a congruent number.

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, 222649 + ... + 222888.

Almost surely, 2^53464440 is an apocalyptic number.

It is an amenable number.

53464440 is an abundant number, since it is smaller than the sum of its proper divisors (106929240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53464440 is a wasteful number, since it uses less digits than its factorization.

53464440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445551 (or 445547 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 53464440 is about 7311.9381835461. The cubic root of 53464440 is about 376.7225993983.

The spelling of 53464440 in words is "fifty-three million, four hundred sixty-four thousand, four hundred forty".