45420101 has 4 divisors (see below), whose sum is σ = 47394912. Its totient is φ = 43445292.

The previous prime is 45420091. The next prime is 45420103. The reversal of 45420101 is 10102454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45420101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45420101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420103) 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, 987371 + ... + 987416.

It is an arithmetic number, because the mean of its divisors is an integer number (11848728).

Almost surely, 2^45420101 is an apocalyptic number.

It is an amenable number.

45420101 is a deficient number, since it is larger than the sum of its proper divisors (1974811).

45420101 is a wasteful number, since it uses less digits than its factorization.

45420101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974810.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 45420101 is about 6739.4436714020. The cubic root of 45420101 is about 356.7927589616.

Adding to 45420101 its reverse (10102454), we get a palindrome (55522555).

The spelling of 45420101 in words is "forty-five million, four hundred twenty thousand, one hundred one".