53503398 has 24 divisors (see below), whose sum is σ = 124841808. Its totient is φ = 16462512.

The previous prime is 53503393. The next prime is 53503409. The reversal of 53503398 is 89330535.

53503398 is a `hidden beast` number, since 535 + 0 + 33 + 98 = 666.

It is a super-2 number, since 2×53503398² = 5725227195092808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53503391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114090 + ... + 114557.

It is an arithmetic number, because the mean of its divisors is an integer number (5201742).

Almost surely, 2^53503398 is an apocalyptic number.

53503398 is an abundant number, since it is smaller than the sum of its proper divisors (71338410).

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

53503398 is a wasteful number, since it uses less digits than its factorization.

53503398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228668 (or 228665 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 53503398 is about 7314.6016979737. The cubic root of 53503398 is about 376.8140794907.

The spelling of 53503398 in words is "fifty-three million, five hundred three thousand, three hundred ninety-eight".