53401402 has 4 divisors (see below), whose sum is σ = 80102106. Its totient is φ = 26700700.

The previous prime is 53401373. The next prime is 53401409. The reversal of 53401402 is 20410435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37711881 + 15689521 = 6141^2 + 3961^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53401402.

It is not an unprimeable number, because it can be changed into a prime (53401409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13350349 + ... + 13350352.

Almost surely, 2^53401402 is an apocalyptic number.

53401402 is a deficient number, since it is larger than the sum of its proper divisors (26700704).

53401402 is a wasteful number, since it uses less digits than its factorization.

53401402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26700703.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 53401402 is about 7307.6262903901. The cubic root of 53401402 is about 376.5744811429.

Adding to 53401402 its reverse (20410435), we get a palindrome (73811837).

The spelling of 53401402 in words is "fifty-three million, four hundred one thousand, four hundred two".