745556051 has 4 divisors (see below), whose sum is σ = 749089704. Its totient is φ = 742022400.

The previous prime is 745556039. The next prime is 745556069. The reversal of 745556051 is 150655547.

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 745556051 - 2¹⁸ = 745293907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745555996 and 745556014.

It is not an unprimeable number, because it can be changed into a prime (745556011) 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, 1766510 + ... + 1766931.

It is an arithmetic number, because the mean of its divisors is an integer number (187272426).

Almost surely, 2^745556051 is an apocalyptic number.

745556051 is a deficient number, since it is larger than the sum of its proper divisors (3533653).

745556051 is a wasteful number, since it uses less digits than its factorization.

745556051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533652.

The product of its (nonzero) digits is 105000, while the sum is 38.

The square root of 745556051 is about 27304.8722941529. The cubic root of 745556051 is about 906.7622534897.

The spelling of 745556051 in words is "seven hundred forty-five million, five hundred fifty-six thousand, fifty-one".