75007477 has 2 divisors, whose sum is σ = 75007478. Its totient is φ = 75007476.

The previous prime is 75007469. The next prime is 75007483. The reversal of 75007477 is 77470057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73119601 + 1887876 = 8551^2 + 1374^2 .

It is a cyclic number.

It is not a de Polignac number, because 75007477 - 2³ = 75007469 is a prime.

It is a super-2 number, since 2×75007477² = 11252243211811058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75007487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37503738 + 37503739.

It is an arithmetic number, because the mean of its divisors is an integer number (37503739).

Almost surely, 2^75007477 is an apocalyptic number.

It is an amenable number.

75007477 is a deficient number, since it is larger than the sum of its proper divisors (1).

75007477 is an equidigital number, since it uses as much as digits as its factorization.

75007477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48020, while the sum is 37.

The square root of 75007477 is about 8660.6857118822. The cubic root of 75007477 is about 421.7303462875.

The spelling of 75007477 in words is "seventy-five million, seven thousand, four hundred seventy-seven".