53545123402 has 4 divisors (see below), whose sum is σ = 80317685106. Its totient is φ = 26772561700.

The previous prime is 53545123399. The next prime is 53545123409. The reversal of 53545123402 is 20432154535.

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., 31077811521 + 22467311881 = 176289^2 + 149891^2 .

It is not an unprimeable number, because it can be changed into a prime (53545123409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13386280849 + ... + 13386280852.

Almost surely, 2^53545123402 is an apocalyptic number.

53545123402 is a deficient number, since it is larger than the sum of its proper divisors (26772561704).

53545123402 is a wasteful number, since it uses less digits than its factorization.

53545123402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26772561703.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 53545123402 its reverse (20432154535), we get a palindrome (73977277937).

The spelling of 53545123402 in words is "fifty-three billion, five hundred forty-five million, one hundred twenty-three thousand, four hundred two".