73975551 has 16 divisors (see below), whose sum is σ = 112470624. Its totient is φ = 42845184.

The previous prime is 73975541. The next prime is 73975589. The reversal of 73975551 is 15557937.

It is not a de Polignac number, because 73975551 - 2⁷ = 73975423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73975511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55126 + ... + 56451.

It is an arithmetic number, because the mean of its divisors is an integer number (7029414).

Almost surely, 2^73975551 is an apocalyptic number.

73975551 is a deficient number, since it is larger than the sum of its proper divisors (38495073).

73975551 is a wasteful number, since it uses less digits than its factorization.

73975551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111610.

The product of its digits is 165375, while the sum is 42.

The square root of 73975551 is about 8600.9040803860. The cubic root of 73975551 is about 419.7874037437.

The spelling of 73975551 in words is "seventy-three million, nine hundred seventy-five thousand, five hundred fifty-one".