70121545 has 16 divisors (see below), whose sum is σ = 90865152. Its totient is φ = 51641280.

The previous prime is 70121539. The next prime is 70121551. The reversal of 70121545 is 54512107.

It is an interprime number because it is at equal distance from previous prime (70121539) and next prime (70121551).

It is not a de Polignac number, because 70121545 - 2⁷ = 70121417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26764 + ... + 29266.

It is an arithmetic number, because the mean of its divisors is an integer number (5679072).

Almost surely, 2^70121545 is an apocalyptic number.

It is an amenable number.

70121545 is a deficient number, since it is larger than the sum of its proper divisors (20743607).

70121545 is a wasteful number, since it uses less digits than its factorization.

70121545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 70121545 is about 8373.8608180456. The cubic root of 70121545 is about 412.3669261594.

The spelling of 70121545 in words is "seventy million, one hundred twenty-one thousand, five hundred forty-five".