103404551 has 4 divisors (see below), whose sum is σ = 105809352. Its totient is φ = 100999752.

The previous prime is 103404547. The next prime is 103404599. The reversal of 103404551 is 155404301.

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

It is a cyclic number.

It is not a de Polignac number, because 103404551 - 2² = 103404547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103424551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202336 + ... + 1202421.

It is an arithmetic number, because the mean of its divisors is an integer number (26452338).

Almost surely, 2^103404551 is an apocalyptic number.

103404551 is a deficient number, since it is larger than the sum of its proper divisors (2404801).

103404551 is an equidigital number, since it uses as much as digits as its factorization.

103404551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404800.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 103404551 is about 10168.8028302254. The cubic root of 103404551 is about 469.3677192765.

Adding to 103404551 its reverse (155404301), we get a palindrome (258808852).

The spelling of 103404551 in words is "one hundred three million, four hundred four thousand, five hundred fifty-one".