53405402 has 8 divisors (see below), whose sum is σ = 83591136. Its totient is φ = 25541692.

The previous prime is 53405399. The next prime is 53405459. The reversal of 53405402 is 20450435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580448 + ... + 580539.

It is an arithmetic number, because the mean of its divisors is an integer number (10448892).

Almost surely, 2^53405402 is an apocalyptic number.

53405402 is a deficient number, since it is larger than the sum of its proper divisors (30185734).

53405402 is a wasteful number, since it uses less digits than its factorization.

53405402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161012.

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

The square root of 53405402 is about 7307.8999719482. The cubic root of 53405402 is about 376.5838832700.

Adding to 53405402 its reverse (20450435), we get a palindrome (73855837).

The spelling of 53405402 in words is "fifty-three million, four hundred five thousand, four hundred two".