53450402 has 4 divisors (see below), whose sum is σ = 80175606. Its totient is φ = 26725200.

The previous prime is 53450387. The next prime is 53450437. The reversal of 53450402 is 20405435.

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., 43970161 + 9480241 = 6631^2 + 3079^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13362599 + ... + 13362602.

Almost surely, 2^53450402 is an apocalyptic number.

53450402 is a deficient number, since it is larger than the sum of its proper divisors (26725204).

53450402 is a wasteful number, since it uses less digits than its factorization.

53450402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26725203.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 53450402 is about 7310.9781835265. The cubic root of 53450402 is about 376.6896248656.

Adding to 53450402 its reverse (20405435), we get a palindrome (73855837).

The spelling of 53450402 in words is "fifty-three million, four hundred fifty thousand, four hundred two".