45420279 has 8 divisors (see below), whose sum is σ = 63747840. Its totient is φ = 28686456.

The previous prime is 45420269. The next prime is 45420289. The reversal of 45420279 is 97202454.

It is an interprime number because it is at equal distance from previous prime (45420269) and next prime (45420289).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45420279 - 2⁵ = 45420247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398367 + ... + 398480.

It is an arithmetic number, because the mean of its divisors is an integer number (7968480).

Almost surely, 2^45420279 is an apocalyptic number.

45420279 is a deficient number, since it is larger than the sum of its proper divisors (18327561).

45420279 is a wasteful number, since it uses less digits than its factorization.

45420279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796869.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 45420279 is about 6739.4568772268. The cubic root of 45420279 is about 356.7932250476.

The spelling of 45420279 in words is "forty-five million, four hundred twenty thousand, two hundred seventy-nine".